The Epic Games Launcher is so far behind on features compared to Steam it's not even funny. Epic chose not to try and compete with Steam on that front and to try and force users onto the platform with exclusivity deals and sweeten the deal with free games.
The one user-centric killer feature Epic has in their stack IMHO is the built-in multiplayer crossplay. Except it's not even exclusive to their store ironically (you do need an Epic account for it though).
What do you consider basic that it's still missing? To be honest I've felt content with it as a game launcher for a while now, but I admittedly don't use it that often either.
I guess our opinions differ, because I don't consider either of those to be "basics". They're nice features for e.g., Steam to have, sure, but they're not "game launcher 101" imo.
Fair enough! I barely use its social side since most of the games I've played on there are singleplayer titles - honestly didn't even know that wasn't there yet!
I kinda understand it not being a priority; even if they dedicated the resources to both create and adequately maintain Linux support, I imagine very few of the games on the platform have native support anyway. Sure, many would work (to varying degrees) with the various bags of tricks available, but it's still an extra step of compatibility that's sort of beyond their immediate control.