Mac OS comes with the purchase of the hardware. For mobile and tablets, yes, there is a strict walled garden. But I've been programming on Mac OS for longer than the age of this HN account, and even longer on Linux. In practice there's not much beyond the window manager and containerization that are impractical on Mac for every day programming compared to mainstream Linux distros.

The family computer is set up to boot into Ubuntu; booting into Windows 11 is the exception (games, iTunes).

Not giving Apple money means no Apple hardware. I've gone decades doing it and haven't regretted it once. I've turned down work because it involved having to work with Apple devices and software. It's really, really easy to not give them money.

Pirate everything if you have to, but stop feeding the companies that are making everything awful.