I’ve seen a lot of the following: Person B is mildly competent, but keeps having their bad ideas shot down. Person D is not, but uses their diverse identity as a crutch. Person C ends up a bystander, blamed for the bad deeds of Person D because B+D have formed an unholy alliance with B providing the technical cover and D providing the outrage, making the bad technical decision about identity instead, despite them not speaking for all of identity. Between the two of them, the are able to wield power for mediocre ideas, and mediocre ideas are often much worse than bad ones. Bad ideas get thrown out or die. Mediocre ones gum up the works for ages to come.

Master vs Main is not a big deal. Changing the default without any technical advantage is a pain in the ass. Had they bundled it with Git V3 when moving to sha256 and everyone having to rebuild their repositories anyway (another mediocre technical idea), it would be palatable.