Glad it helped some. The launcher does not hold for me, crashes (Linux Mint 20.2). Worked fine in Proton 5.0-10 up until this patch. Unfortunately it sounds like there is no reason to believe things will get any better for Linux, rather, worse. Token storage changes, stable Mac client. See post by @CCP_Bartender :
https://forums.eveonline.com/t/new-launcher-new-linux-error/319782/104
I’ve only just started playing since January, a paying customer, subscription and plex. Sub ended a couple months ago and now I’m glad I didn’t renew, but regrettably I was saving the plex for later, maybe to resubscribe with. I should have sold it and blown all the ISK on some ridiculously expensive pirate faction stuff. Oh well. Worse is I didn’t get to say good bye to some of the good people I met in-game. Fly safe on Windows and Mac, looks like I’m out.
Please do not clog the thread with “helpful” or “enlightening” replies. If you can fix the launcher in Proton by all means post it, but Windows or Mac are not happening and the plex shall rot in the vault. Period.