I met Bucky and spoke with him a few times. I suppose DaVinci was thought of as a nutjob too, as I’ve always thought of Fuller as the unappreciated Leonardo of our age.
His low-cost, icosahedral designs - one frequency geodesics - could actually be ‘flown in’ to relieve suffering in disaster areas. They WERE flown to the arctic and formed the ‘DEW Line’.
I like your other description: “a walking unorthodoxy”, very apt for him. He invested his own personal fortune in the Dymaxion car...this was in 1933!
I admired him greatly.
I've read about him, his life and ideas and to me he is one of those inventors that embodied inventing. Everyone dreams, only a rare few risk it all to take the next steps.