

Although you are correct (I think), with verified status you can actually open a ticket in case something does not work with proton. Usually the verified status is good for this use case. I do not know if games that are not verified can actually get support inside steam for proton (I doubt it).
I am using them on a small storage box (around 2tb) and I am quite happy with it. One of the things that I particularly liked is the documentation. If you have a use case for rsync, Borg backup or others, it’s probably covered in their documentation (plus, never had an outage or issue with my data). I didn’t use their support at this point, but ibheard good things about it as well.