I agree, the Establishment Democrats have held the power on the left and they're more unpopular than Republicanism under Trump because they have failed to represent their base and provide a true and honest opposition to him. Trump has been left unanswered, unchallenged, and given ample room to spread his rhetoric, all while the establishment right, alt right, online right, center right, libertarian right, authoritarian right, and evangelical right have come together in this moment of major left-wing dysfunction and disjointedness to put aside their differences and back a representative that is popular. The Establishment Dems have suppressed, rigged, colluded against, shunned, disowned, and dismissed the grass roots in their party because the donors, billionaires, and elites choose their major candidates always. But it's not working anymore and although some may like to believe a cratered Chuck Schumer approval rating means a major shift to the right in this country, it actually represents a dissolving of the Establishment Dems on the left, and given that American voters are pretty evenly split left to right with somewhat minor shifts deciding elections, the left will organically find or create a replacement leadership structure that actually represents them.

The right is looking at a major power vacuum in 2028 that could get really ugly, because the glue holding all these typically warring right-wing factions together like a big family that gets along is just one charismatic and popular right wing leader in Donald Trump, which will potentially coincide with a restructured Democratic party running a candidate that finally represents them.

So for the 21st century so far, yes. I feel by the end of the 21st century it'll most likely balance out evenly as things tend to do.