Because 95% of those people work with Linux, but not in it. OS X is BSD-based but close enough to make developing or supporting Linux machines simple. My entire infrastructure, thousands of servers, are all Linux, but most of the time I'm working on my Windows PC, and only occasionally do I break out my Macbook or Linux laptop. Love Linux, can't stand Apple, and I'm meh about MS except for gaming, but Linux as a desktop/workstation OS is still years behind OS X and Windows in ease of use. That said, I do not nor would I ever run either of those in any production capacity, just Linux.
It's been my experience so far. Even linux user group meets had people with macs (prior Apple Silicon). Bigger, opensource conferences had an absolute majority of macs. Boggled my mind.
there are different levels of foss, I guess.
the latest guy using a mac I saw was Matthew Hodgson (the matrix guy) and I really don't get the people using macs in a foss world
Weird take but I always had issues sharing screens for presentations on Linux. Every time I plugged it into a portable projector or screen that wasn't my own, there would always be 15 minutes of fumbling.
The crappy workaround has been to just use wherever computer is plugged in already and use a PDF, Google slides, or Mac.
I think Linux/FOSS is about software, not hardware. Ok there are grey areas (firmware).
Sure, apple is a mega corp that is not particularly ethical (see reparation score) but I am not convinced that, let’s say, Lenovo or dell are much better.
On the other hand Apple hardware is generally fairly solid, mainly intel chips (that are generally well supported in Linux), there is a relatively small set of products so it’s easy to check compatibility.