Nobody's purging the words from language. We're just acknowledging that human slavery is a painful enough atrocity that we should stop using it offhand as an analogy when there's perfectly understandable, less atrocity-sourced language we can use. If instead of CRUD we had Send-to-work-camp, Arbeit-macht-frei, Burn, wouldn't that throw you a little bit? Because the first time I saw Master/Slave it struck me as a bit callous and I was just a teen in a 99%-white suburb at the time.
And why do so many tech people have a problem with this? It's a low-hanging-fruit find/replace problem. Minimal effort and a large portion of us suddenly feel less unheard, less unequal, less marginalized, more apart of the team. What's the problem with that? Slippery slope? Good logic there, tech guy. Oh and that's kind of like saying, "Give them an inch..."
You should know better. In tech you either enjoy solving problems or you ultimately become a problem to be solved. This isn't hard. It doesn't hurt you. All you should need to hear about anything black and slavery-related is that it hurts them and be on board for some near-effortless wins.
Like think about it. Really think about it. Why is it so hard for so many of us to budge an inch on something so easy to change? Admin/worker. Mastermind/minion. Manager/subordinate. Delegator/executor. I'm not even trying that hard. Be a tech person. Solve the simple problems first and fast and stop bitching about it before you start to look like the very thought of making the slightest, easiest change for a potential black coworker's peace of mind bothers the !@#$ out of you.
Because it's not a good look on any of you. I'm disgusted by it.