Not a fan either. In fact, I was perusing the Yes thread here, and while my knowledge of them is pretty limited, it seems like for a legendary and flagship band in the genre, they only have a couple stellar albums, and decades worth of material that is marginal at best and garbage at worst. True?
Not true, and even if it was (but it's not) they are SO big as to make it a moot point. But few people realize that even in America, they were a STADIUM band (which for prog... neither Genesis, Crimson, or ELP were stadium level bands as headliners [ELP played stadia as openers a fair amount] during their heyday).
I'm a huge fan. I think his voice is unique and angelic, and it's one of the few cases where no one can really sing those songs like he can. Starship Trooper, Your Is No Disgrace, And You and I... magic.
Lyrics? Well, I don't mind them, even like some of them (Dreamer easy in the chair that really fits you!) but it's not meant to be high philosophy. I posted a thread at another site not long ago asking, "who was the greatest prophet of rock and roll? Jon Anderson or Ronnie James Dio?" Haha.