Your mistake is using the usual logic. That flip only works to identify breaks in a logical way of thinking and serves to highlight how something might not make sense in reverse. Except instead of If A then B and if B maybe not A, we have:

If not fascist, vote Biden

vs

Trump.

He is the equation. No if-then statements, no maybes, nothing. Just the equation of Trump.

He is their god-king. If he says drink cyanide, a shocking percentage would do so. Because of the assassination attempt the timeline has shifted. It is no longer a race of one terrible choice and one middle-of-the-road choice, now especially it is about image and the charisma to represent a figure to the people who need to vote. Allow me to lay a short timeline:

Joe announces a second term. This was his chance to tell all of us that if he can't do it he will step down, for the good of all of us. This creates trust in a leader that understands what is important.

Trump confirms he will run. GOP immediately behind him while playing smoke and mirrors.

Fast forward through mostly normal months if you put aside all the court meetings with Trump at the head.

Joe challenges Trump to a debate. ALL OF US expect Trump to get destroyed. Despite his intelligence, old age is showing and Biden fumbles the ball. Honestly not badly in any other year, he just fumbled it next to one of the biggest imbeciles in recent history and because expectations were high, the fall went further.

However, this is a chance for Joe to recover. Apologize for his performance. Go full Dark Brandon. Explode out onto the news and talk shows. Hire Wendy's PR team and have then run his social media accounts. Admit he fucked up and then step up strongly and precisely. This is how you turn these situations around in your favor.

He continues to fumble and honestly? It isn't truly even his fault, until he admits that he is staying in to "do his best". Now the responsibility is 100% on his shoulders for everything, period. Before this he may have had wiggle room. Unfortunately, that is a statement of ownership. It was not popular.

Then Trump gets shot. Since it happened, best case was him not getting hit at all. Second best was the shooter finding success. Worst case scenario, well...see Trump holding a pose, blood running down the side of his face. Before this moment, Biden was unpopular, though still Biden. There remained ways to regain a foothold. Now even I, who supported him staying in, cannot find a reason for him to do so. He's lost the image game. A single bullet shifted the scale.

To win now it's on us to be the leaders. We all need to come out in numbers never before seen. Without our own figurehead, and there are people whose image could easily challenge and outstrip Trump's, we can now only rely on our collective desire to stop this evil. The problem is the people who can beat him don't want the job.

They would be heroes.

I just don't feel they'll step up.