I'm fine with language evolving; my issue is that there used to be a word that succinctly conveyed a particular idea, and now there is no way to concisely convey that idea in English.
"Gay" changing its meaning isn't the same thing, because there are still plenty of ways of saying "happy" in English.
Oh, I agree completely. I think it's disgusting how the right has succeeded in shifting the Overton window a ridiculous amount over the past decade or so.