Well, I would put it another way.
The US has a two party system.
Not mandated by the constitution but that's the practical reality.
So in presidential elections they always have only a binary choice.
Yes, globally people currently for the most part want change and are rejecting incumbents.
The democrats particularly Biden made a huge mistake.
Had he not run and let it be a normal primary system most likely the democrats would have nominated more of an outsider candidate not locked into the Biden association.
So Biden in dropping out so late leaving no time for a competitive primary, created a near impossible long shot for the insider of insiders, his flippin' vice president.
However, I still think bringing an insurrectionist obviously authoritarian to power was a very stupid and dangerous choice.
But I do understand how it happened. Sure.