I heard people claim for some time that Proton supports the Trump administration. I've only ever really seen the claim made based on a single tweet.
This person did a pretty deep dive and comes to the conclusion that they don't, nor does their CEO.
I'm not saying I know what's in that guy's head, nor do I want to. But I'm wary of coming to an extreme conclusion about someone because of a couple of sentences that person wrote online.
https://io.waxandleather.com/users/alisynthesis/statuses/115245340493250991
It was more than a single tweet. It was the way they handled the pushback too. I couldn't find any mention of the deleted official response in the article you linked. It's here. And this does not prove that they are supporting Trump, it just shows a complete lack of ability to read the room. I ditched my Proton subscription because there are other providers who have not praised JD Vance (just for showing up).
For which provider did you ditch proton?
I copied that comment from the linked masto post. I use disroot, autistici, and riseup for email