OP, it depends on the game. If you read Digital Foundry they'll usually explain why they might have done one thing or another. I forget why some of them opt for unlocked framerates when the game consistently stays 30fps and above though.
Again I say...play the game. You can't see this without looking at graphs so what is the point of worrying about it?
This is worse than slowing down a video to point out that the rock that you just passed didn't have dirt on it with one console.
No its not.
Fact is, if it wasn't for people delving into the technical aspects we wouldn't have a lot of the improvements that games have seen. Its basically the only area that games have, in absolute terms, improved. Unfortunately, it also highlights just how much further games can go.
What I don't get is if people discussing technical issues bothers you so much why you never take your own advice and stop worrying about it and not post in threads about it, copping the attitude you always do?
Also, believe it or not, its not just about graphics, this is stuff that actually does impact gameplay due to latency. If its good enough for you then fine, but stop acting like there's no point to analyzing games to this level since there's absolutely things that can be improved. Latency will also make a huge impact with stuff like VR.
Yes it is because a lot of displays don't manage framerates that aren't 30 or 60 well, and so you do get judder, tearing and other problems. Of course some games can limit this, hence why Digital Foundry does the in depth analysis that it does.