Keep up the good work
Are there plans to make proton support anti-cheat engines? Part of me hopes yes, but another equal part hopes you don't.
But I think I would be ok with a device dedicated to gaming having anti-cheat. Not because I trust it, but because there's nothing on that device I need to trust it with. Except maybe my account login and network access.
On the site, you can review games that are known to use anti-cheat here: https://www.protondb.com/explore?selectedFilters=antiCheat
And to clarify, I'm not a dev on any of the underlying Proton technologies. I just run a community site for it.
It's really just a matter of developers opting-in. Rainbow Six Siege is one of the big ones I'd keep an eye out for next; Ubisoft has been teasing the community forums with official Linux questionnaires and RFCs for months now. Fingers crossed!