"master" is a "blocklisted" word now. I also think it's silly to change the word on places which doesn't have "slave"s (e.g. github master branch > main branch switch), but well..
It does make one wonder, if there was more diversity in CS when these things were being made whether "master-slave" analogies would have made it in or whether other analogies like "parent-child", "major-minor", "leader-follower" or similar would have made it in.
[0] https://about.gitlab.com/blog/2021/03/10/new-git-default-bra...
In the end it doesn't really matter once the word has gotten tainted. It's still ugly that incorrect deductions spread so quickly and corrections don't.