We don't know that he hasn't taken a pay cut. Posting about it might just come across as self-serving, but then not posting about it makes it seem like he's not doing it. Lose-lose, it seems.
And... I suspect whatever he's doing is also affecting him emotionally/mentally, and... to some extent career-wise. Taking these sorts of public steps may make it harder to be entrusted to CEO someplace else in future. Given patreon specifically, I doubt he's planning to leave and go CEO someplace else, but overall, there's no easy outs in scenarios like this. He'll be getting second-guessed and pilloried regardless of what steps he takes.