Still don't feel ready for gleba..
I would wager that some American demographics are a lot more selfish than others... I digress, because it doesn't change two facts:
Media has long manufactured consent (even lying in doing so 🤯, see: Iraq) for various attrocities committed by the united states government, regardless of popular support.
And second, the gutting of social security by bypassing budget approvals (infraction of sep. of powers) and kidnapping of students based on ideology and without due process (just authortarianism) are part of the same issue currently afflicting the US. If for some reason individuals drive a cudgel between these issues, they're more than either ignorant to or complicit with the issue they whatabout over.
But on that, given your anecdote is taken from a livestream chat, you may be underestimating just how much astroturfing takes place. We've known part of the playbook is to completely overwhelm our media intake, desaturating perceived potency of headlines and happenings. I would go as far to take wedging issues like that to be another tactic... as we've seen that strategy successfully work to drive flimsy democrats to 180 on LGBT rights.
If you assume the worst of the people you will need to work with, you won't get to influence them enough to understand the nature of the issue at hand
Hell most 'liberals' i know don't even know what political theory matches their alignment. I wholly doubt that 20% polled are completely okay with this court giving up.. critique of liberal institutions and representatives is a completely different matter than trying to talk down to people who may not fully understand or comprehend even their own positions, even if well intentioned.
The elder liberals I talk with are not filled in, still obtaining most of their knowledge of events through corporate media. That isn't their fault, but that won't keep me from vehemently criticizing, for example, liberal MSNBC and their coverage over say a particular conflict in the middle east. Now when they do coverage of Trump, again i will be noting their passiveness and complicity, even when agreeing with their notions. Those disagreements from a fundamentally human point (say war not generally being a good thing) are usually something liberal individuals completely agree with, but do not have an alternative narrative to fall to once they start taking apart and questioning what they've been told, therefore they're less likely to begin with.
The liberals of our representatives, like Chuck Schumer, have absolutely no excuse to turn their back on their constituents, but they have an interest in 'business as usual'. We should not hold back in our push to remove such spineless, uncaring, nihilistic representatives as soon as possible. And frankly, if you haven't at the bare minimum written to your representatives, i don't want to hear what your idea of a strategy is.