When I was in school, I had textbooks that said "Negroes". Then it was changed to "colored", then "black". We had a session in the beginning of the school year when we had to sit there and cross out the old words and write in the new ones. There was some speech about how the old word is not nice and won't be allowed.
It seemed odd to have a word that was A-ok 3 months prior to suddenly be a bad word, but at least there was transparency.
In some respects, the avg dub is childlike in his unquestioning acceptance of what Mother Borg tells him. Yet he gets little closure or acknowledgement. He is usually left to figure out what changed so as not to make a misstep.