It's only charged if you are a white upper middle class american. The rest of the world understands the difference between a term used in a software version control tool and slavery. The rest of the world also does not change a word on git while simultaneously fostering extremist far right views.
The whole thing makes absolutely no sense whatsoever.
It wasn't anyways. It was clearly in reference to "master copy", which is also not a charged term. Neither was "master bedroom". Hell, for most of my life I'd never even seen anyone raise objections over the master/slave dichotomy used in software and hardware either, which is a far easier to understand argument. It's all very recent, last decade and some change, despite many of these terms having come into use after the abolishment of slavery in the U.S.
The word "master" is of course still in widespread use elsewhere too. We still say "Master's degree" or "mastering a skill".
The point of this entire exercise was group dynamics, but what I hate most about it is something that I also hate about other recent bullshit: I hate that not wanting to play is in itself forced to be an active stance. I have no reason or desire to change my default branch name; it is staying master. That is not an attempt to signal anything at all. This is not "chud-coded". It is literally, the absence of a desire to participate.
And we'll never forget it either, because now even in pre-existing projects we have to checkout/pull master then main. Or worse. You know how many times I've accidentally rebased off of an ancient version of something because master still exists? This is surprisingly common.
It was an entire waste of time and everyone who has remaining respect for themselves should be honest about it.