you could argue he did what he promised on immigration, but even the supporters disliked how he went about it
You could make that argument, but his claim was that he would deport the criminal immigrants, but most of the people being trafficked or deported have no criminal records, and while it's not actually important to this argument, virtually all of them have less of a record than he does.
Importantly, those people still want those things, and prioritize those issues, and it doesn't look like the democrats have a believable plan to deliver on them
Sure, some of them are things they're equivalent to the Republicans on, while others are things that no sane person would want, and no kind person would want either.
That means two years from now there's going to be an opportunity for someone else to come out of the woodwork and campaign on the same issues and re-invigorate those swing voters. A Trump 2.0.
Yes, his supporters are stupid or evil enough to vote for another person like Trump.
Most of these voters are working class people who are traditionally supportive of democrats
What?
so I'd love to see the dems get their heads out of their asses and offer this group something real and tangible, particularly on housing affordability, but it seems like they openly despise the working class
Sure, but only about half as much as the rapeublicans do.