There are absolutely identity politics driven US liberals (as opposed to the use of liberal by the rest of the world) that are ranting, raving assholes. Always have been.
But, here’s the thing. Those assholes are much more likely to be ostracized and/or shut down by the less batshit US liberals, progressives, socialists, etc that form the “left” writ large. But echo chambers for it do exist anyway. There’s a few on lemmy, though they aren’t federated with most of the rest.
Here’s the key difference. What conservatives want to conserve is their sense of power. It’s mostly straight, cis white people here in the US. There’s plenty of exceptions, but they tend to not be as loud and asinine as the ones you’re talking about.
That’s where the anger comes from: fear. Fear of black/brown/yellow/red people. Fear of anything different. Fear of a non Christian based world leaving them behind.
The ones at the top also want to stay rich and powerful in the political sense, and are perfectly willing to weaponize their voting base to do so.
The ones at the top of the various non-conservative branches in the US also want to keep power and make money, and they’ll use different fear to mobilize, but they don’t usually weaponize it.
Fwiw, if you’re one of the ones that does want to play petty, childish games instead of doing something useful, it’s good you’re shamed and muted. Shit or get off the pot. Engage in real work for real change, and do it like you know how to pretend to be a civilized human being. I’m not even talking about peaceful efforts. If you really want to force change, step the fuck up and do something about it. Start the revolution you want to see. Just don’t be some douche harassing churches and pretending it’s anything other than self congratulatory masturbation.