Name for this kind of slogan is a "Thought-terminating clishé"
A thought-terminating cliché (also known as a semantic stop-sign, a thought-stopper, bumper sticker logic, or cliché thinking) is a form of loaded language—often passing as folk wisdom—intended to end an argument and quell cognitive dissonance with a cliché rather than a point.
It’s just as much a left-wing echo chamber as Truth Social is a right-wing one - and that’s a problem in both cases. Some might say it’s fine because we’re on the right side of history and they’re not, or something along those lines - but the people on Truth Social think the exact same thing. No one’s views ever change that way.