> nobody's thinking of Slavic people being slurred
Yet! Nobody thought about "master" being offensive either. But with enough activism, anything is possible. I eagerly await people trying to cancel "Masters" degree because it implies less credentialed people should be slaves to more credentialed ones.
"servus" historically meant servant as well as slave though, iirc. imo etymology is less important than the current emotional valence of words, though. nobody's thinking of Slavic people being slurred by the word "slave" unless they dive into Merriam-Webster.