As for the Democrats should be embarrassed? Really, not cheerleading here, but what for?
I don't see anything to be embarrassed about in the crop of candidates they put forward. They have decided on one candidate, with a minimum of infighting, long before expected. And while Biden has his problematic areas, a VP who helped preside over the most competently run administration in modern memory is nobody to be embarrassed about.
Maybe Democrats in Congress should have done more via oversight to bring his criminality to light? Maybe. But then shouldn't Republicans be embarrassed for the same, and then some?
How about the media organizations that constantly draw equivalents to outrageous Trump behavior, playing a big part in normalizing it and papering over his rank unfitness to do the job? I think they should be embarrassed.