But you can run your own kernel on Macs, no? Isn‘t driver support the issue?

Maybe Apple Hardware would write Linux drivers to sell their hardware for servers. Intel contributes to Linux kernel. AMD contributes to Linux kernel. Nvidia contributes to Linux kernel. A lot of hardware manufacturers support Linux to some extent. It's no longer reverse-engineered wild west.

Not on new silicon and asahi linux is still pretty damn far from being able to use it seriously. I do appreciate the effort, but I am just saying that it would be a lot better if you know, apple sold the hardware so vendors could build laptops with apple silicon.