Proton seems on the wrong side of the usability - privacy spectrum. Every last feature I’d want from an online provider is impossible or massively neutered by the overly strict security.
I wish there was a similar service in a trustworthy country with a more sane level of safety, like opt-in encryption for example.
I have never had a good experience with a Debian server. Every single time I had to add unstable or third party repos to get anything remotely current to run. What’s the point if you have to add unstable shit anyway?