Just because something is free. It doesn't mean you can call out unprofessional behavior. Since macos is free should all macos users ask for a refund when they encounter something they don't like?

MacOS is included with the price of Apple hardware.

I’m glad the Linux community doesn’t engage in too much professional behavior. It would be really annoying if Linux was as locked down as a proprietary OS is, and I suspect contributors would find the whole thing less fun, so they’d share less code as a result.

That would be offset by a larger number of people contributing as part of their job. Take a look at the Linux kernel itself as an example of this.