I hate what you refer to too, it's essentially changing the meaning of a word with political intent. It also happened with "tolerance", went from enduring something you don't like to not caring about it in the first place.

But all that does it make words mean different things at different points in time, which is still just how words work. The meaning of the word "gay" is pretty different now than what it was, "meat" used to refer to all solid food, not just muscle and organs, "tweeting" is, at this point, more used as a reference to an internet service than to birds.

We didn't get to learn a final and set version of our languages, we just got the current one, they all keep changing nonstop and words changing meaning is just one of the ways in which that happens.