There was a follow up where people feel he doubled down on this by having the official Proton account post "Until corporate Dems are thrown out, the reality is that Republicans remain more likely to tackle Big Tech abuses.". This statement was later retracted by Proton. That is full story.

This is not the end of the reasons that people have an issue with Proton, I was just clarifying the vagueposting about the CEO support for Trump.