I'll admit, a fair amount if GG stuff is cheesy (even for my tastes). But they have 4 albums that are really solid, and great songs scattered across the other ones.
Pompous, yes. And rightfully so. Their use of compositional techniques (like counterpoint) is so well done. They're musicians' music. The vocal-fugue songs like "Knots" are quite interesting. Both medieval and modern. Influenced by fugues and the psychologist R.D. Lang.
Pompous? I've heard so much criticism of the "excesses" of progressive rock. I don't get it. Is it a bad thing to write complicated music that takes musical skill to play? Is it a bad thing to be influenced by classical music? I'll take pompous prog rock over boring 80's poop any day (and I'm talking to you Interpoop, Modest Muff, and Fucked Ferdinand -- shame on you all for sucking so bad and getting so much praise for it. Nice suits, though. Nice hair too.).
People who don't like the "excesses" bought into the record industry's plot to make music more cost effective. A band like Yes was a nightmare to record. They were a nightmare for live shows. The industry loved drum machines (Linn) and simple 3 chord Huey Lewis pop songs. A band like Yes adapted, and did songs about who would own up to farting in an odor free environment (owner of a lonely fart).
The Gentle Giant DVD that just came out is sick. They all play 4-6 different instruments, with virtuosic skill. Definately not crap. Although their medieval bell bottom suits are really funny... No one does this today, because no one can and it doesn't pay off. It doesn't pay off to have a conservatory-schooled keyboardist. Just loop dat shit, yo.
Limp-wristed? I doubt that. Although one of their album covers seems to advocate tossing salads, I'm sure they mean this in the most heterosexual way. Just because they dressed like Liberace doesn't mean they are like him...
Great album, and their early foray into avant-garde realms... Definately my favorite of their early stuff. Three Friends is also pretty good. The first self titled one isn't that great.