Although, as a practical matter it provides some protection in the sense that most malware is probably not designed to do that and will, at worst, fuck up the Windows environment created by Wine / Proton. It’s not something to rely on but it is a bit safer than running something directly on your home machine as a practical matter.
(Although I guess that depends what the malware does. If it searches every document on your system for credit card numbers and sends them to Albania, that would probably still work.)
Most likely this incident is an indirect result of that coup. After that, they had to rapidly replenish the mod team and didn’t have time to vet people, so they ended up with someone like this.
FWIW my recollection from looking over sunbothersco at the time was that they were a clout-seeker with no meaningful history on /r/piracy - they were repeatedly and aggressively asking to be made top mod of a wide variety of subs at the time, with no real connection between them. It sucks that reddit was forcing out top mods, but I wish they’d at least followed through on their threat to make it democracy, since there’s no way we would have ended up with someone like that if the system had been anything but “randomly hand the sub to whoever asks first and loudest.”