No, I could not tell if Frank is schizophrenic from some posts on a website ... nobody could, or should.

Frank might be sick, but he also might just be a troll, just plain stubborn, or perhaps lost in a sort of transcendental fog that denies him an ability to truly explain what he knows. The last one is pretty farfetched, though, because even folks who cannot explain their transcendental experiences can still communicate normal thoughts, respond to questions, and realize they are repeating the same unreadable gibberish ad nausea. .

We strangers on a forum cannot know for sure; it's up to Frank -- or perhaps his next of kin -- to explain what all his discoveries/wisdom/insane rants/trolling crap is really about.