I’m in no way a Google fan boy (rather the opposite), but IMHO this is backwards.
We have a (at some levels) shits DRM because of Google providing a semi-secute DRM stack.
If you want to go full DRM, there is no way around a key store, so for most (user) linux installations unachievable.
Without widevine nobody would give a fuck about Linux DRM anyway and Netflix, Amazon and friends would be out of reach for “normal” Linux users.
That said: fuck DRM, fucking cancer.
Warframe might be for you.
You can play everything solo, or join with random people without the need to ever talk to anyone.
After a while, if you feel like it, you can use the in-game chat, or not. You can join a clan, or not (not being in a clan has it’s downside though, nothing critical except the arch wing, which must suck not having)