The "language evolves over time!" folks conveniently omit the fact that they think it should only apply when the new meaning is beneficial to them. Otherwise, they are perfectly happy to argue the opposite viewpoint. This is prescriptive, not descriptive language analysis...

About your last paragraph, I find it quite telling that diversity notoriously does not include diversity of thought, it's all about immutable character traits. It is also sometimes no longer considered permissible to hide your immutable character traits anymore which I find sad.