This news trully saddens me, as I've seen Insomniac as one of the last to devote themselves to 60 fps or in that sense "gameplay over graphics". To see them go the other way is very disappointing.
I'm quite at loss for words at the stupid poll that was used to form some argument. A poll without a context isn't worth much and this poll certainly didn't have one, besides framerate. Surely, it depends on the type of game if a 60 fps framerate is beneficial or not. In any game where you have a freely movable camera (technically, any shooter, 3rd person game or platformer), you can appreciate the higher framerate.
In some games, the line is more blurred as the pace is limited by the movement of the player or the speed at which the camera can be rotated. To imagine a game like Ratchet & Clank reduced to 30 fps is just awful.
Sadly, with all the credit Naughty Dog are receiving on their 30 fps games, it was just a matter of time. The market is turning increasingly shallow with everything directed at visuals and screenshots. Can't really blame them. If you want to survice in todays market, you better have something that looks good.
I really hope console makers enforce a 60 fps rule next generation, limiting the playing field to all. If everyone sticks to the same framerate, there should be no reason to go "lower for better". That framerate however should be 60 and not 30.
This move by Insomniac to me, looks like a hurt gesture that Ratchet & Clan underwhelmes visually and all the rave on Naughty Dog's Uncharted 2. Looking back at our R&C thread, it does seem there are an awful lot of posters that are unappreciative of what they are doing. Sadly, I bet, an awful lot of that criticism comes from people that have absolutely no incentive to play the game, regardless the framerate or how the game looks. I just can't believe the market is becoming THIS shallow.