Biden supporters: "Unite around candidate Biden or prepare to watch Democracy die!"
Biden detractors: "You guys are nuts! That old bastard can barely put 3 sentences together. I will argue we should have a younger more vibrant candidate like Big Gretch who would wipe the floor with Trump all the way until I vote for Biden's senile ass on November 5th!"
Biden supporter: "You dumb fucks, Whitmer herself says she isn't interested and is all-in for Biden! But she'd be a great candidate and I would fully support her if Biden steps down and she was the nominee. But he won't, so pull your heads out of your asses and support him!"
Like, if we gotta argue, let's have fun with it and just vote 100% for dems top to bottom on November 5th.
The outcome of this election is either Trump or not Trump, The election system has been specifically fine-tuned over decades so that it strongly favours Trump's party, despite him having fewer votes overall. There is one other party that is financially entrenched enough to have a chance at being voted, realistically.
Tackling the entire election process to actually catch up to democracies worldwide is a whole different topic altogether and realistically not achievable before this particular election, so if you are talking about preventing Trump via election (before Trump factually prevents being elected out of office during his term), the choice between either Trump or Biden is the reality.
"Blue MAGA" is straight up propaganda. If you think these two parties are alike enough to address democrats like that, you either have an agenda or are woefully uninformed.