Isn't 'idiot' the word that was used in the past for people with mental disabilities though? It was used in a derogatory way. I could see idiot being the next word that gets "banned" from vocabulary.
My view on this stuff is that trying to ban words is extremely toxic, stupid, and short-sighted. There will always be another word to come and fill the void.
However, I will stay away from using triggering words in the presence of people that don't like them... just like how I don't swear in front of grandma.