Eric Weinstein also has a PhD in physics; it doesn't preclude you being (or becoming) a crank.
What is specifically crank about his theory? From outsiders perspective having theories that require a bunch of extra dimensions just to make the math work sound no less cranky.
I'm not claiming to be qualified to judge it, but it's quite clear that no one who is takes it seriously. He also seems to spend most of his time pontificating about things he has no expertise in and using his genuine expertise in physics to show off in front of easily-impressed podcast hosts — not a great sign.
" pontificating about things he has no expertise in" again he has PhD from Caltech in particle physics he had a good number of published works in quantum field theory how are you coming to the conclusion he is pontificating about things he has no expertise in?