>>939403561 (OP)
It's called the "euphamism treadmill".
The term "retard" was introduced because people in the past thought "idiot" was too offensive, and "idiot" was introduced for the same reason. We went
>... => moron => imbecile => idiot => retard => handicaped => special needs => ...
where each new step in the chain was introduced as a politically correct institutional term to replace the old politically correct institutional term after people started using the old term as an insult.
Remember that normies are religious at the genetic level. Taking away christianity/islam/etc isn't going to magically make them enlightened , they will just start applying their genetic religiousity to secular aspects of life instead, causing secular aspects of life to take on a religious character. That's why all the feminist/gay/tranny/etc shit started to feel like a cult after atheism was normalized. When normal (ie genetically religious) people started joining these movements they brought that religious mentality with them. Christianity wasn't keeping normies dumb, it was keeping the rest of society intelligent by quarantining all the retards in a humane manner. It was basically a containment religion, and now that containment has been breached the things that used to be secular are now turning into religions as normies look for a new outlet for their genetic religiousity.
The word-worshipping that leads to the euphamism treadmill is just one example of this. It's basically a linguistic cargo-cult. Concepts matter while words are just arbitrary labels, but normies are linguistic thinkers rather than conceptual thinkers. To them words are more important than the concepts they represent, which is why they think they can change reality by changing the words we use to describe it. It's basically magical thinking. Politically correct language is just modern magic spells. If we just find the magic word for niggers then nigger fatigue will disappear.