The “steam is a monopoly” thing is really drilled in deep in some people. Meanwhile I just finished guardians of the Galaxy and outer worlds from the epic store freebies. Entirely on my steam deck. I also installed some other games from gog and put on my captain hat and hook and installed some repacks using bottles. You aren’t forced to use steam, apart from if you want to use game mode and control customizations which will work regardless of game sources. You lose essentially nothing by using other stores, apart from your money and achievements I suppose…