I mean, groups of people can deliberately the meaning of words or other parts of language. Socialism coming to mean things that have no relation to marxism was probably a deliberate campaign. That's also what the neutral language movement is about. But also linguistic derivation is just a fact of life, as described by sociolinguistics. And being mad that gay doesn't mean happy anymore or that a certain word should always mean the same thing just makes you pedantic weirdo, if it's not attached to a cause that actually matters.