A decade ago wasn't Musk talking about Hyperloop? He sounded like an idiot to many people then, too. His companies were good at the time but once he talked about anything else I feel like it was pretty clear who he was.

I don't think this is new though, Henry Ford was famously into anti-Semitic conspiracy theories and even owned a newspaper to spread hateful nonsense (history might not repeat itself but it apparently does rhyme). I'm sure if there was more recordings of robber barons of the past you would see the same dumb nonsense you see now.