As someone who lives and works in Silicon Valley, the amount of coworkers and colleagues in my experience in engineering using non-default MacOS configurations is nonexistent. There are things like Asahi Linux (which is an amazing project, don't get me wrong), but let's not pretend that the people who use open source software on MacOS are not fractions of a percent compared to the general userbase.

In fact, my experience working in IT professionally and assisting friends and family personally has only underscored that view - those who were actually using Linux and FOSS software professionally were not on Apple hardware (and knew what went wrong and what assistance was needed). Those who I had to assist with Apple hardware... were different strains of "technically inept" who managed to break their experiences despite using default settings (kind of impressive I suppose).