Earlier quoted context omitted.
Another item added to the list of why I'm not buying one of these.
I feel kind of grossed out, as a developer (and tinkerer) by how locked down Mac products are. It's not really your computer, you're just renting. Apple has decided that they know what you want and need better than you.
There is a massive marketplace for tinkering on computers, from Arduinos to multi-GPU ML rigs. Trying to optimize for both classes of things seems like a foolish endeavor, especially when Linux users represent such a small fraction of the desktop market.