I'll explain this for the billionth time.
Democrats can't get what they want because they don't win enough elections to have the power to do what they want.
The message of burning the GOP down presupposes that the democrats possess such a capability.
I don't know if DU has noticed, but the GOP currently holds a registration advantage, I believe. People are beginning to tire of the COVID control measures, and are seeing through the contradictions in public health policy relating to COVID. Americans like their voter ID laws. They like secure borders. They are seeing Biden's pathetically bad leadership. Demographics that democrats were counting on to solidify their power are turning to the GOP.
So yes, the problem with democrats is... democrats.