They forgot it because they realized how fucking retarded they were and want to push it out of their minds.
It's quite literally worse than death for the cattle to admit they were wrong and they will never ever be willing to touch the subject again.
Even all systems and services have done their best to scrub all corona era videos that have people with masks on.
It was fucking annoying watching anything during the corona era, as everyone wore the muzzles and now it's hard to encounter any videos from that time.
I do however remember how fucking insane the average normoid was and if the state asked them to kill unvaccinated true sentient humans on sight, the brainless cattle would have paraded our corpses on the streets with absolute fucking glee.
That event was so eye opening in a way I'm happy that it happened, because I bet none of us thought it was this bad with normies.