Has been said already but intellect does not depend on education. It may be honed, fine tuned but we'd be dismissing a hell of a lot of very intelligent people in assuming lack of education = lack of intellect.
Re the gay thing, it always makes me feel fairly uncomfortable when famous people are talked about in this way. The fact is nobody here who says GC is definitely gay could possibly know, and no, you don't have it on good authority [irritating wink]
The same people would say that being gay is no big deal in this day and age, nothing to be ashamed of etc so why harp on about it? About a person you never knew and never will? It feels vaguely homophobic to me.
It's another version of that creepy sense of ownership some seem to have for famous people (generally women). Kate Middleton for example, the way every tiny detail of her is debated and examined, every imagined fault held up for scrutiny like she's just a thing we all own.
I've meandered there somewhat but yeah, basically unless you've personally witnessed GC playing with a willy which isn't his own then no, you do not know he's gay.