In the meantime, when people are lied to by every avenue of culture, they are convinced everyone else believes in the lies, so they feel alone and in the minority, even though they may very well be in the majority. So long as this spell can be maintaned, the dictator can hold his grip on power.
But what happens when that spell was broken? When something happens, and all of the sudden, everyone realizes they've been in the majority all along? This is how dictatorships topple -- and the toppling can happen very swiftly, as Ceausescu discovered in Romania.
Elon Musk acquiring Twitter and taking out the censorship is what initially cracked the spell this time; and when Trump was elected not just by Electoral College, but by the Popular Vote, the spell was broken completely. It's why we're seeing so much change now, and why it's so rapid.