He was always a nutcase. So unhinged he got booted out of PayPal. Then the shenanigans and retconing of him as a Tesla founder. His unrealistic promises he never realised over the years at Tesla. The pedo guy thing. The HyperLoop bullshit. It was not as obvious because he still had some filters but it was already visible if you were paying attention. Problematic is a good description of what he was.