Yes, languages change over time. Part of what differentiates us from animals is the ability to observe and alter the course of those changes.

Perhaps there was a time when individuals such as ourselves should have stopped the term ‘idiot’ from becoming added to common vernacular. That damage is done, we can prevent further damage from being done.

So far the person I’ve been responding to has only proven that they think using slurs is ok. You should keep that in mind.