> Then you cannot claim that Linux works out of the box. It doesn't if you need to select hardware for it

That is not what that means. At all.

> Your usual Linux laptop OEMs like System76 and Tuxedo just buy better combinations of the whitelabel stuff.

This is not what System76 do, actually.

> Many drivers today have quite proprietary user-space side. You'll get none of that from any laptop manufacturer.

Not with System76

> You may say you don't care about those and you're okay with 10 - 20% power loss.

I'm not. That's why I stopped buying Windows hardware and started buying Linux hardware!