the best thing for the Democratic Party to lose again after tacking right.

Best for who, and why? Not trying to do a gotcha or anything, just curious on how you think it would be beneficial, and to whom.

I get the overall theory, a normal person would of course question why they lost and correct their behavior accordingly. However, that requires a bit of honest introspection. And the last time this happened with Clinton, all they did was blame the left and migrate even further right.