Jokes on you, but they changed the default branch to be named "main" instead of "master" for reasons of appropriation.
Seriously, ignore political correctness for a bit. The “master” branch is generally not in charge of anything. It’s not like a master recording of which everything else is a copy. It has no special rights and isn’t even necessary more important.
It made a limited sort of sense in Linux where torvalds/linux.git’s master branch is the branch that everyone else’s development eventually follows, but my git clone of that is not any sort of master despite being called “master”.