It's been "Sociable" for much of my gaming career. Other than in high school and some gaming in Uni, I've either gamed at the LGS, where the people I game with I only see on game day, or, for the past several years, over VTT.
Which is certainly not to say I don't like the people I game with. That's not it at all. I've liked most of the people I've gamed with and the ones that I don't like generally don't stay in the group for very long before personality frictions tend to split things up. The risk of gaming with strangers is occassionally having a jerk at the table.
However, most of my "hang out on a Friday night" type friends have been non-gamers. So, no, my gaming table hasn't been people I hang out with in about twenty years for the most part.
Interesting poll. While I apear to be in the minority, I'm certainly not the "outlier" that was claimed either. There appears to be a pretty significant minority who plays like I do.