Unless you propose a department of political correctness to police language, language tends to morph and change. 


And even if you were to try to enact that here via authoritarians like Trump, it still wouldn't matter on the world stage, or for the longer view. 


Words like "gay" will be repurposed with or without your permission. It was likely this way since the dawn of languages. 


You would do well to get over it. The cons do a great job of reframing things - like trying to  make the real meaning of "fake news" go down Orwell's memory hole. But they don't own the language and normal people will push back on their nonsense.