They're genuinely scared they will end up on some list, and Trump or others will take their revenge. Because it's been done so much on the left, the return volley is now scary to them.
Since they truly believe Trump is Hitler, they're expecting camps. So, they are deliberately keeping their mouths shut until "freedom reigns".
The others are trying to conspiracy theory the idea it was fake, or act like it never happened.
That sounds exactly like the meme of the guy making cardboard cutouts of monsters and then curling up on the floor in fear.
When somebody spends a lot of time thinking about putting people on lists to censor them, dox them, harass them, hurt them and murder them; it's no surprise they suspect their enemies do the same thing. At least when they self-censor for whatever reason, the world is still the better for it.