I am not sure about others, but I am not comfortable with ANY possibility of Trump winning back he White House. Any support for him is dangerous and reckless.
Supporting him is only going to fuel the conspiracy theories he endorsed & started. These lies have shaken the trust in US institutions, especially with his base. His first loss resulted in him lying and causing instability. They actually stormed the capitol! That did not even happen during the US Civil War! If he loses again it will be no different.
Furthermore, any continued support is legitimizing his claims that he is being “unfairly targeted” or that the left is engaging in a “witch hunt” against him. What will his supporters do if he is jailed? What happens if he wins from jail!? Will there be violence? Probably.
And if he actually wins the White House again, what will happen? Now there is an actual traitor to the nation in the White House! I would be shocked if that didn’t also cause violence and instability! The amount hopelessness that would cause would surely create instability and a serious lack of trust in the United States and its institutions.
TL DR: Any support for Trump is going to cause instability, violence, and a constitutional crisis! I understand the Democrats think they can beat him again - and hopefully they can - but I would sleep a little better knowing he was completely off the table.