Yes, the tour guides tell of the upgrades to the cantilever done since the structure was built. Wright does seem to have been a bit of an ass and he was certainly a guy who elevated architecture to art. I consider that to be a good thing. It certainly wasn’t unliveable since the Kauffman family used it for many years. It also has standard height ceilings. I’ve never seen any tall people having trouble while I was there.
Maybe I’m thinking of robie house, bumped my head coming down the stairs. I’m only 6 2.