I have much respect for drag and don’t disagree with that point in general, but in this particular case I must protest.
Democracy is a process for legitimizing a government. The voters cannot fail at voting, they can only be failed by elected parties that don’t faithfully represent their interests once in power. The responsibility is entirely incumbent on the parties themselves, as they get to pick how they manipulate public sentiment into supporting them and the voters have no agency in the decisions those parties make.
What goalposts?
America has a capitalist monoparty that only pretends to be two parties so as to maintain the illusion of choice.