SteamOS is just a Linux distro. You can use it as a desktop, install windows on it or do whatever else you want

Ecosia plants trees for every search request. So technically it removes co2 every time you visit the site.

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5

I don't understand the Vanguard hate. Its one of the best anti cheats and unlike EAC it doesn't take screenshots of your desktop.

Just use a separate OS install for games.