I agree with #9 and #7 and partially agree with #8. With #8, I've I'd say the entire Halo series.
#6 though I don't agree with at all and I think the opposite. GTA fans praise GTA3 and Vice City but bash on GTA4. Even San Andreas is crap compared to GTA4. GTA4 is the first in the series to have a competent targeting system. Physics were a bit too heavy, but nice if you wanted a sort of realistic feel. Story missions were well done, and a little bit of skill you could get through any of them without having armor as a requirement. Vigilante missions were removed from previous games where you'd have to kill one random person, while instead they added a different version of them which more closely resembled real missions. Taxi missions were still available through Roman, missions requiring you to get a specific car, assassin missions, races, etc.
If you then got Lost and the Damned and Ballad of Gay Tony, there were other missions. Fight club, gang wars, Road Rash style races, and sky diving along with other well done missions and storylines(even if the story to Lost and the Damned wasn't that great compared to the other two.)
So anyways. With San Andreas, first off. The targetting system is better than GTA3 and Vice City, but it's still weak. The driving is good and there's a lot to do, but what's the point. How do people get so much enjoyment out of flying an airplane or a jetpack when there's really nothing up in the sky. Or you can drive off the side of a cliff and parachute. So fun..... once or twice at most. So yeah. If you like an extreme amount of monotonous bs, then yeah, you'd love San Andreas more. There's so much more to do if you don't mind the fact that there's no substance to any of it.
Thankfully all that monotonous bs is going to have missions and challenges designed around them, so there's actually a reason to bother with it in GTA5. In San Andreas there's a lot you can do, but there's nothing to actually do with all that's available.
I know why people like San Andreas, since they like screwing around with no goals, I personally don't, which is why I favor GTA4 because there's "actual content."
*edit*
As for RPGs, there are plenty that are more overrated than Final Fantasy 7. Final Fantasy 7 might not be the best RPG in the world, but it's a very good game. Some of the most overrated RPGs are widely praised as being some of the best RPGs ever made, and they're not even close to being the best. They're merely good or even okay. I'd label Earthbound as quite possibly the most overrated RPG, because aside from its unique graphical style, the game itself isn't that good. Super Mario RPG and Lunar are also commonly praised as some of the best RPGs ever, two more highly overrated RPGs.