No, it does not remotely seem like arguing that we shouldn't teach the history of marginalized people. How do you go from "I should be able to decide to only teach works from white men" to "other people shouldn't teach anyone other than white men"? To go from "I should be allowed to _____" to "nobody should do anything except ______" is a massive leap.
A course in classics is going to have overwhelmingly male authors, likely exclusively so. The reality of the ancient Mediterranean was that patriarchy was extensive, and women were not afforded the opportunity to contribute in that space. This is in now way saying that other courses in other fields should feature women or minority authors.