I'm not asking this to bait you. It's not a trick question. I genuinely want to know.
Biden himself has stated multiple times that he wants to "reach across the aisle" (his exact words) and work with Republicans. You know, the same Republicans that are banning abortion and LGBTQ+ people? The same Republican party that has literal white supremacists in its political ranks? I earnestly want to know why you still back a party that openly wants to work with fascists.
The only answer I've ever seen liberals give is that the Republicans are worse... and they are, yeah, but if your choices are pure evil, and the guy who works with pure evil, doesn't that suggest that both of them should be opposed? And as we've seen, a democratic government won't fight to protect marginalized groups from the bigoted laws the Republicans are passing, so even voting for them to protect those groups from fascism just isn't working.
And what do you make of Biden telling his wealthy donors that "nothing will fundamentally change." and Biden boasting about the economy while rent skyrockets people live out of their cars and struggle to feed themselves? How can you call yourself a leftist or a even progressive if you stand by that?
Again, I'm not saying these things to be abrasive, I genuinely want an honest answer.
I think there's a third option: a group that actually does meaningful outreach that improves the material conditions of your community. What exactly that's going to look like (or what specific group it will be) depends a lot on where you are. Food Not Bombs is one that's pretty easy to recommend to just about anyone, as they have a presence in lots of places and do really great work that goes beyond performative protest (which, as you say, doesn't really amount to much), but there are other options. Community organizing, union organizing work, LGBT advocacy/support, and other things like that are really great choices. Anarchists talk about the importance of building "dual power" structures, in which we come together to meet the material needs of the community when the entrenched power structures (like the government and private organizations) either can't or won't meet those needs. That's truly revolutionary action, and it's also the best sort of outreach and recruitment you could possibly do. Nobody pays much attention to people unobtrusively marching around with signs, but everyone is going to remember who fed them when they were hungry.
I do agree that it is a meaningful action with greater real impact than the other two strawman examples I mentioned. But I'd clarify that though it is compatible with "support leftist organizations and revolutionary communists" -- it is not nearly as ideological and instead more practical, with a broader base of people engaged in and supporting their goals without rallying around a specific ideology which they may feel is alienating.
It's not like non-leftists participating in these groups were tricked -- they legitimately believe in and support these causes too. In the other direction, these types of groups that you mentioned aren't going to "abolish capitalism" either (to borrow the phrase from OP's comment), and likely don't even have that as a stated goal even if some of their members might want to.
I understand your equating practical/real communal efforts with revolutionary action in an increasingly individualistic society, but surely it falls a little short of the usual rhetoric I see in hexbear content (posts, comments from users)? I mean, if that's what folks mean when they use "revolutionary" language then that's great. My feel is that it is usually meant more literally (i.e., armed conflict or other violence). I definitely don't think "oh yea they're suggesting I go help out at the homeless outreach center". But hell, maybe I know more communists than I thought ;)
I mean, some of what you're seeing on Hexbear is deliberately over the top performative
rhetoric. There are a lot of people who think that armed conflict is inevitable (or even to be desired), but there are also a lot of people who see community organizing and actually helping their fellow humans as equally important. We tend to play up the violence stuff for laughs (and as a way of pushing back against civility culture), but my impression is that there are lots of us who are genuinely out there trying to make the world a better place.
This is almost certainly true, even if they don't know it themselves. See David Graeber's "Are You an Anarchist? The Answer May Surprise You!"
Yea I totally get that performative aspect, and I appreciate it even if I haven't developed the sense to differentiate it all the time. I'm working on it, I know more exposure will help. Lol