DY. I didnt mean intend to offend developmentally delayed people. I doubt that is the case, they do however find it offensive when it is used as a way to offend others. They dont mind when it is used in a flame-retardent sense.
In contrast the n-word is considred offensive in all conotations. They do take offense if you said Yankel’s Hat is “n–ger” even though technicaly it is the latin term for black. Offenive/polite terms are decided by society.
Rape is uncouth in (most) yeshivish circles. although the hebrew term (even in ISarael) is not.
“retarded” is considred impolite. Though not in every usage.
The n word is offensive in every usage.