It’s not easy to express negative things. No matter how many neutral terms we invent, they become pejorative in the end and we have to invent new ones by switching the words around.
Yep, like the word "retard" was a medical term when it was first coined.
It's plenty easy to express negative things. What's not easy is convincing people that negative things are actually positive, which is why words that refer to negative things are perceived as being negative words.