The article has one sentence on using older versions for better compatability with some games.
The rest of the article is basically summed up by “bigger number means newer”
The whole article seemed very surface level and didn’t really give any more info than could be derived from the names of the versions. As for the community forks mentioned people could find much better info just looking at the readme.
Maybe I’m just too technical but it just feels to me as pointless as an article explaining the difference between hot and cold taps on a sink.
Edit: fix autocorrect
For anyone who wants the same info without the ads see: https://github.com/ValveSoftware/Proton/wiki/Proton-Versions
And for proton-ge: https://github.com/GloriousEggroll/proton-ge-custom?tab=readme-ov-file#overview
Proton-sarek: https://github.com/pythonlover02/Proton-Sarek
The only reason for the article to exist is to have an excuse to serve ads.