Alright, today I am going to start a little adventure and try to install Arch Linux onto a MacBook Pro 16 inch from 2019.
There is a project for that called t2linux which aims to provide guides and helpers for doing these kinds of installations:
Let's see how far I will get :D
Status: After around 2h in total, I can boot it up from a LUKS encrypted drive but then the internal keyboard stops working - solving this will be a task for another day. :D
All in all the installation went quiet smooth without any “hard hacky” stuff - most things are already prepared as packages/repositories ready to use!