My final straw was getting a new MacBook Air (I was at that point fine with how UNIX-y macOS was) and realizing I couldn’t dock the laptop to more than one external monitor without some weird hacky third-party software fix. Why, you ask? Well not at all because the laptop technically couldn’t do it, but because Apple said it can’t, because they want to overcharge you on a Pro.
I promptly returned the MacBook, bought a Framework on eBay, and learned NixOS.