Or perhaps the blue House and Senate will prove themselves to have all the legislative skill of a box of frogs and out themselves as worthless to the American electorate. Which will catapult a non-dinosaur MAGA candidate like Vance (not pushing 80) into the White House, to the anguished wails of well-intentioned idiots everywhere. Obama was devastated in the midterms during his first term and still went on to win a second term. The MAGA wing will not prove anywhere near as hazardous to the Republican Party in the long run as the DSA will prove to the Democratic Party, the latter will be tantamount to an outbreak of the bubonic plague in the blue camp if allowed to make their intentions known.
You're calling people "well-intentioned idiots" all the while not knowing that Congressional majorities flipping to the other party is pretty much the rule. So based on that reason alone, even absent of whatever Democrats do or fail to do, winning now has already put them on the back foot in a few years. There is one exception this century where the party in charge kept control after midterms: George W Bush in 2002, thanks to 9/11.
We have a lot of stupid people in America and people who don't pay attention but they vote like they do anyway. Trump's loss was self-made, in between the war and tariffs. The blame is accurate this time, but voters vote as if the president is a magician who is supposed to wave a wand to fix problems. High egg prices had nothing to do with the president (Biden). Rather, avian flu reduced number of available hens, which drove up prices due to scarcity. High beef prices have nothing to do with Biden or Trump. There are far less cattle in the US now than in the eighties.
So, if Democrats don't fix economic issues in two years (some matters like tariffs and cutting funding for the war are in their control, but others like high home prices are beyond their ability to quickly bring prices down), they will be voted out anyway.
In closing, yeah some of the DSA folks have extreme ideas, but there hasn't been a DSA person that started a coup that led to the storming of the US Capitol yet. It's rich to be complaining about DSA when
regular Republicans aided Trump in a coup. Additionally, the current president said he was gonna be a dictator and didn't walk it back when a conservative personality (Sean Hannity) knew that wasn't a wise thing to say.