And if Apple did it themselves, like Intel or AMD do, it would be released at the same time as macOS.
Sure. But is that a reason to complain? If Apple made bikes, they may be nice bikes. But I don't see a reason to complain about Apple not making bikes. I mean... they don't have to, do they?
Would be cool if Apple decided to support Linux, of course. But why would they? If it was profitable for them, they would do it. Instead they think it's more profitable to enshittify their products. That's life.
Now people who reverse engineer that to help us run Linux on Apple hardware... I would guess they don't make a fortune doing that, and I find it impressive work.
Intel and AMD sell to customers that build computers running Linux, especially servers. Apple sells to itself, to build computers that run their own OS.