I read this article and it certainly is something to consider.
It talks about how Andy Yen was just pointing out how under Trump's first admin, they started to actually attack big tech when dems haven't done anything. Which is true. He praises Gail Slater and Lina Khan (but Lina Khan was recently fired...sooooo).

They clarified how the andy1011000 (andy88) username probably is more about how Andy's birthday was in 1988 and 88 is a lucky number in Taiwan, unlikely that he's a white supremacist.
They also traced the money of Proton's donations and none of the organizations were republican, and pretty much all of the donations align with the practices of Democrat donors.

Andy has a history of posting online supporting Ukraine, being against xenophobia, against racism, supporting women in tech, supporting refugees receive education in Switzerland.

When the Democrat party had proposals for regulatory efforts, Andy supported them.
https://proton.me/blog/congress-antitrust-report
He even made a tweet and blog post talking about the tech surveillance underneath the Trump administration and how people should fear it.

So it seems to be that Andy is more liberal when donating money and publicly acknowledge whoever is in support of anti-trust and anti-surveillance to me.
If it's the goal of Proton to seem neutral, then they maybe did it a little too well. They convinced people that Andy is a full on fascist when in reality, he seems better than democrat politicians we have nowadays.