such not being able to mix with any type of license
GPL licenced software merely has to comply with the GPL - make your changes available to all etc. The whole point of the GPL is to ensure that you can take but enforces that you give back too. It’s the Stone Soup thing.
MIT is loved by say Apple because they can take your work, do their thing and not have to contribute back. To be fair, Appley stuff is now quite a long way away from BSD!
As I’m feeling charitable, I should also point out that CUPS is/was largely Apple driven, as is Avahi/Bonjour. I can deploy a Linux box and expect it to find and setup available printers without having to do anything.