Someone from team Bush would have immediately "stepped up" to be the candidate, and with the Uniparty back again in control of both possible options, the Biden question would become less important and the debate around it would fizzle out, even if they ended up replacing him too. In short, we would have the peace of the graveyard.

It didn't happen, so we will continue to have an environment of extremely elevated media tension on both fronts: against Trump first and foremost, and as a consequence against Biden.