Someone in the comments on a previous 404 article listed a few things -- nothing necessarily "cancellable" in its own right, but drawing a pattern:

https://www.404media.co/proton-to-re-interview-staff-about-a...

- Praising the Republican Party and endorsing a Trump appointee.

- Andy choosing a username with 88 in it (a common Nazi dogwhistle) but then claiming it had a different meaning.

- Sponsoring a far-right French YouTuber and claiming they had no idea.

Again, nothing hard and fast. But it meant I was not at all surprised to find out how fucked up the company is on the inside.