There's no such thing as a "progressive wing" in the Dem Party, so your point is moot. If the Dems were actually leftists and progressives, they would still be in the White House and a majority in Congress. It's worthless establishment politics that allows any opposition that portrays itself as populist and practical, to win. True genuine leftists and progressives are both populist and practical, serving the interests and needs of the working class (94% of the population). That's what wins elections.
If Bernie Sanders had started campaigning early and had become the Democratic candidate running against Trump, he would've won (the Dem establishment forced him out of the race in 2016 and 2020). All of the youth and many older people as well, would've voted for him, not Trump.
Nonsense, it isn't what the ruling class and their bootlicking slaves want. The majority of working-class people, especially the Millennials and Zoomers, would've voted for Sanders. The future isn't the bootlicking boomers, right-wing conservative boomers are expired milk, it's the more democratic socialist Millennials and Zoomers.
You're so confused. These next four years are going to lead America, right into socialism. Don and Elon are pretty much ensuring the success of genuine leftist populist, progressive politics in the near future. A wave of young political activism is rising, and they're not going to allow the right-wingers to reduce them to cannon fodder or unemployed, impoverished serfs. A true populist movement is going to rise in the next four years that is going to be unstoppable.