Adding the section containing FAQs and other tips to the chapter.
Some little things I noticed, should be easy to fix.
This paragraph is hard to understand for me (non-native english speaker). Basically you want to say "no, do not install native hardware drivers", but after the first comma you lose me.
Missing config or link?
wine-proton in the copy&paste buffer while expecting the link to the AppDB to be in the buffer?
Maybe adding the info the wine-proton is supposed to be used with the linux-steam-client port, which would then take care about setting up everything so that it is point&click for the user.
A new extra comments.
Overall, I like the FAQ and the questions discussed therein.
No line break within a tag. Just break <application> into the next line if it overflows the characters-per-line restriction.
Right, this is too nebulous. Forum posts can disappear, so it is best to replicate them in the handbook if possible.