This definitely isn't at all true, cuz there were people who were 'completing' the game very soon after launch, which is how we got all the hubbub about how completely shallow and ridiculous the actual 'ending' was.Even ignoring the crashes and corrupt saves, NMS was completely broken because it was impossible to complete, or even half complete, the main story for about first three.
In fact, the link you showed there isn't about about the launch at all, it's for a very large update patch they introduced later. And these patches were introduced pretty quickly after. There's very few very large updates these days that wont require some further minor updates to patch up holes. Take a large and ambitious game, and make a reasonably large update, and you're absolutely going to have to work further on new issues that arise once pushed out.
It's just a weird example, cuz Hello Games are probably some of the most productive and expedient developers for a large scale game like this I've ever seen. And like 99% of the complaints at launch had nothing at all to do with the game being 'completely broken'.