I work at a company that was born and grew during the master->main transition. As a result, we have a 50/50 split of main and master.
No matter what you think about the reason for the transition, any reasonable person must admit that this was a stupid, user hostile, and needlessly complexifying change.
I am a trainer at my company. I literally teach git. And: I have no words.
Every time I decide to NOT explain to a new engineer why it's that way and say, "just learn that some are master, newer ones are main, there's no way to be sure" a little piece of me dies inside.