There still is something different from mockery or poking fun at previous presidents, and mocking Trump.
The latter seems more fanatical and cultish, while one can enjoy the former even if not against the guy.
It's an aura of desperation. A lot of the people mocking Trump give the feeling that they're desperate that people not dislike him, even a little. That you MUST think he's literally hitler, a threat to everything, going to ruin everything, that he must be stopped, that he is the avatar of all that is wrong in the world, yet alone politics. You can't hate him 50% or even 75% you must be all in on the FUCK TRUMP party, or else.
I didn't see this in the bubble pointed at previous conservative leaders. People hated Bush, and yeah, some of them hated him a LOT. Romney, McCain, et cetera, they disliked them. But there was never this aura of desperation amongst them all. My boomer parents are pretty apolitical, never spoke with me about politics at all, ever. Every single time Trump is mentioned around my mother she launches into a tirade about how she hopes he dies and every single thing he's ever done has been the worst thing ever and god why did he survive that gunshot hope the next one takes him out. It's fucking eerie.
Being in the bubble and on the left during GG was like seeing all the people around you have a thin veneer of respectability get scraped away and discovering what was right under the skin was dark black and writhing in hate for everyone who was even a little different than them politically. Not just hate for even moderates yet alone conservatives, but sneering, joyful hate. It's the same thing with TDS. They can't just be against him. They can't just be opposed to his policies. No, they have to HATE HATE HATE HATE HATE HATE him and everything he does says or represents and they HAVE to make sure you know it.
It is a mental illness. I don't know what one. I believe it's the result of demoralization or phobia indoctrination or something, but I'm no shrink -- and the shrinks were compromised years ago by the activists.