The man has a fundamental unit of physics named after him. He is not obscure. Can we please stop with the hero worship?
One doesn't need to be obscure to be a hero; quite the contrary, and he isn't a hero for being obscure; he's a hero for being a genius inventor who, as you mentioned, even has a unit of physics named after him.
Actually a nice digest of what's been happening with regards to Tesla in the most recent times, for those who weren't following.