For most of my Linux friends they claim it's because they prefer the customization, but in practice it really seems more like they just dislike the Apple ecosystem in principle. I have yet to find a workflow they have that I can't do more easily and faster in MacOS. Similar experience with working in git in the terminal vs GUI apps. So many devs swear the terminal is "faster and more powerful for git" but in practice I am doing basic git functions faster and with fewer errors than they are just using the GitHub desktop app.
I would very much like to be proven wrong, I think OS competition is a good thing, I just want to see some practical examples.