I agree in general with your first point.

Regarding gaming I disagree: my gaming needs (using a Mac for everything else) are fully satisfied by an additional steam deck, a "console" running linux. Of the top of my head I know only of one game I would like to run it on the steam deck but can't.

> but both Mac and Linux are too far behind Windows or consoles to be considered as gaming machines.

That's absolutely not true, the vast majority of Windows games now run flawlessly on Linux via Proton. This is especially true for the kind of games you can expect to run on such modest hardware, i.e. not AAA games with kernel-level anticheat.

The Linux gaming runtime is free, much like Windows redistributables. macOS gets singled-out for not having DXVK/Proton, and rightfully so.