Oh yes of course that all makes sense, but it's also all just speculation. The Dems have not dominated yet. In more than the 3 decades I've been alive, the Dems have only had a filibuster-proof majority of Congress, plus the presidency, for a handful of months.
I've seen them win the popular vote and lose the presidency twice.
I hope the Dems do dominate and shift the Overton window left. But I think we also need to be careful about the expectations and narratives carried online. Fascists love to spread the lie that the Dems have been in control for decades and accomplished nothing. So saying Dems have dominated elections when they haven't (at least not nationally) is dangerous.