Vaccination does not prevent one to get the disease, nor to transmit it, by any meaningful measure. Flu vaccine as well, same situation.
I did sadly believe it would help stop transmission too, in early 2021 when i got my shots. As the media were suggesting it and because the word "vaccine" has been used for this injection and I probably many others, are use to the word meaning it "stops us from getting the disease"
Just re-quoting as this was a reply meant to partially answer, beside of the direct point that in this case vaccination should be a personal decision, to
@Albuquerque 's ideea that it's a lot about political aligment and news sources.
So, could it be rather that the vaccines did not turn out what some people expected them to be (even if the expectations were unrealistic)? Could it be that some the people felt betrayed and patronised by goverments' tunnel-vission messages about vaccination?
I see the questions above as significantly more important to answer for whoever wants to get to the buttom of this; than which party you allign with and what news do you read.
(Further, concerning parties and media, my comment and observation is that this might be a US phenomenom, and to a lesser extent maybe, of the most ritch Western countries. And the fact that it doesn't apply elswhere, makes me question wether it applies in the US as well as one might thing it does. It may very well be the famous "correlation and not causation" in this case
So in Romania, my country, there was no political party which was anti-covid and anti vaccines. There was, of course, a generic anti vaccine sentiment pre existing among some of the population. Being an ex comunist country, people are different; and what's relevant here woud be that there's a higher baseline level of nonviolent distrust of authority on one hand, but also still a tendency to comply to rules out of fear among elders, on the other.
Anyway only later, at the end of 2020 by then already, the extreme right wing party did adopt that (anti-covid) discourse publicly; my point thus being that it only did so after the people already had ran away with it.
About the news sources, that's IMO a tautological statement mostly. Of course getting (alleged) facts from one place as opposed to from another tipically means a different perspective on the facts. News/media is a form of entertaiment too; people might actually read some sources because they agree with them. And not the other way round - people being manipulated into agreeing to what the source publishes )
To an extent, it did:
The effectiveness against transmission waned because the virus had continued to mutate. When the vaccines first dropped, the strain they were specifically targeting were indeed hampered in transmission. The virus you're fighting now is different than the one we were fighting then.
The main benefit of being vaccinated now is to decrease your viral load and the severity of the infection, which is extremely valuable and perhaps that message wasn't communicated as clear as it could have been early on. But while relatively brief, it did have a period of reducing transmission too.
Firstly, let's not confuse transmission with infection. There's no good evidence vaccination prevents transmission, to my knowledge, and the manufacturers themselves said they've never measured that and they wouldn't claim any efficacy here. I do agree though that at the time the confusion was made, by me as well i think, and from the media back then you might get the hope vaccines would help with that.
Wrt to infection yes, that's mostly how i understand it, it does help with current strains but that is an academic point as vaccines will always be updated for the previous one.
However for boosters there were studies which showed it helped reduce infections for a few months. However, that protection is still lower than needed to impact the progress of the disease. And further, some some studies show that the likelyhood is increased to get the virus, the more boosters you get .
I think suspicions around the current vaccines in part, which has been somewhat proven justified since we've learnt how they haven't been as thoroughly tested as other vaccines and there are some unknowns surrounding their novel vaccine strategy. I think it prudent to scale back the vaccination while mRNA vaccines are investigated more to learn the ins and outs now that the majority of Covid risks are diminished. If it were up to me, I'd see about creating mRNA vaccines for other disease we already have vaccines for and comparing them. And/or developing traditional vaccines (or alternatives like nasals) to Covid while mRNA vaccines have ongoing evaluation.
But why would we ever want a mRNA version of an existing vaccine?
Seems to me, the only advantage of mRNA is that it helps with manufacturing large quatities of vaccines easier ( eliminating the need to grow the whole inactivated virus ). To achieve said scalability, Pfizer at least even has used a less precise manufacturing process (compared to the one presented to the approving bodies) to mass produce the vaccine
On top of the current uncertainty and suspicions, we get the drawback that the antigen remains in the body for a long time, and spreads through the body (as opposed to classic vaccines where the antigen remains near the injection site ).
I'm not sure that there have been any indications that mRNA vaccines actually have any serious harms - once you ignore the Covid-denier groups who, of course, who do a dumpster dive into VAERS/Yellow Card reports and try to blame anything that happens to anybody on the vaccines. I remember there were indications of a risk of mild carditis in adults - but much less of a risk than being unvaccinated and contracting Covid. Not sure if similar risks occur in children, but I've not seen any reporting of it.
There are no indications of course, if you jump at excluding wherever/whoever such indication might be coming from. And you seem to be attempting to make it easier for your future self as you are demonizing those sources.
Here's a recent article though, apparently asking to stop mRNA vaccinations until questions are answered:
https://www.cureus.com/articles/203052#!/