I agree that if it was main before it shouldn’t have been changed.

The whole branch naming thing is still only half implemented fwiw. Lots are still master, the default for new branches seems to be main. At my company it is “develop” for git.

Other VCS software uses a totally different name, perforce uses main for example.

I don’t really care what it was, it could have been “killwhitey” and I still would have been against changing it because of the effort involved in changing every repo on earth and the invalidation of every tutorial in existence.