I mean I guess since he works in finance, I'd say that's the most likely area to find direct evidence of malfeasance related to 9/11.

Not the attacks or any of the controlled demolition bullshit conspiracy theories but profiteering off of starting a never ending war, which relates to the only semi-credible theory I've heard about 9/11 which is that certain people in the government connected to defense contractors "let it happen".

That said, probably just a guy having a mental breakdown.