The primaries are over. You’re too late to be making this point. You either fight like hell for a second Biden term, or you’re going to get a second Trump term.
I don’t like Biden. I think that despite passing some much needed domestic policies, he’s a mediocre president. But everything will get worse if Trump wins again. Being anti-Biden at this point in the game is just carrying water for fascists.
Literally the most you can do electorally that doesn’t count as sabotage is to vote third party to make a point in a state that has no risk of swinging right. Outside of that, if you actually care about stopping this genocide, you should focus on things other than whether Biden is the right person for this moment, because while he might not be, he’s definitely not worse than Trump.