I don't support people who are blatantly attacking inclusion of all people, but there's a legitimate section of the Democratic party that is more focused on identity politics as a device rather than as a legitimate issue and place considerably less value on the economic equality many minority groups would benefit substantially from. I don't have any issue pointing out that support of identity politics without the willingness to make substantial economic reforms to benefit minority groups is, at best, a little bit hypocritical. I mean, you have to be willing to address the root causes of systemic racism and sexism, and not just put on the face of "socially progressive, fiscally conservative" at a certain point.
The coalition of vulnerable populations is also because there is literally no other choice. In the US, it's a dichotomy between Democrat and Republican. You basically have to choose which group fucks you the least even if they both fuck you (which, again, historically has tons of nuance and it's not like they've always been absolutely screwed over by Democratics, but it's also not really that much of a choice either). And, the Democratic party has a wide history that needs to be reckoned with too in terms of disappointing minority communities and avoiding lots of meaningful change when they've had more opportunities to do so. A lot of traditional liberal policy has been deeply problematic, and I don't begrudge anyone for finally exhausting themselves of the traditional Democratic party. Sure, they have been the party of progress, but on average it has been social progress while still operating in center-right policy for decades. They're better than the alternative, that's certainly true (Unless you're Bloomberg, in which case fuck him), but being the better party in an uncompromising dichotomy doesn't inherently make them the "good guys" either. And obviously, there's a lot more nuance to the actual realities of the situation than "liberals" bad, but it's well past time we held the establishment's feet to the fire to help shift the overton window back left and also work towards economic equality in more meaningful ways. Economic populism and economic human rights is how we make social equality an easier to obtain reality.
I do think it's important to keep trying to bring in people, even if their social politics are not the best. Economic equality is going to help open up more lanes to work on those social issues with voters that aren't just intrinsically hateful, but programmed by years of propaganda from conservatives. People tend to be more receptive of and willing to assist in social justice fights when their basic needs as a human being are also being met and they can actually work as activists when they're not worried about losing their healthcare from losing a job by attending such an event for example. And I think it's important to believe in the "redemption" if you will of the electorate because the alternative is horribly grim.