Don't forget 'sex change', which became 'gender reassignment surgery', which because 'gender affirmation surgery'. All of them are incorrect, but they become increasingly Orwellian.

The 'isms' are useful for the regime. The pawns of the regime can't really be trusted to refute counter-arguments. But if you equip them with a few choice insults, like racism, Russia, conspiracy theorist, then they can shield themselves off.