You can also always disable SIP and spelunk around if you want to. There's just far less of a hivemind for macOS tinkering and it's not as readily apparent to jump into.
The macOS tinkering is like tuning your car engine while trying not to void the warranty, the Linux tinkering is being able to turn your car into a rocket-powered go kart. It's not the same thing.
You can't really "void the warranty" poking at Mac OS internals, and the built-in recovery partition makes it pretty easy to fix anything you break. Same as booting a BusyBox shell when you break something in Linux.
… though turning a car into a rocket-powered go kart seems like exactly the right analogy for running Linux as a desktop in my mind. Supercharged and able to fly, but not street legal or practical in any way.