> I address them as I come across them

You're already too late at that point, and you probably lost some players, that wanted to try your game and maybe would've even liked it.

And I'm not talking about gameplay logic bugs - I'm talking about issues caused by bad drivers or by not having intimate knowledge about the hardware.

> If you use Unity, you are putting your complete faith that Unity has perfectly optimized X low-level problem away at the engine level

Most major engines allow to bypass high-level abstractions either through scripts that access low-level systems (Unity) or by directly letting people modify the source code (Unreal Engine, Godot).

> I love being solely responsible for the defects in my games.

Players do not care about that.