The one I'll bring up, as an example of "not as political" but still harmful, is used by chuds, libs, and leftists alike as a throwaway putdown, insult, and thought terminating cliche.
"WHO HURT YOU?" :very-intelligent:
The damage it does to social discourse comes from further normalizing the implication that being hurt is a mockable thing that deserves ridicule and dismissal, and the other problem is that it makes sincere suggestions to actually seek actual help, stated in good faith, get lost in the haze of :reddit-logo: tier le epic takedowns.
My runner-up is "grindset." The entire concept is poison and seems to contaminate impressionable brains at an alarming rate. Motivating people to improve themselves and achieve things in a healthy way is harder to do when so much online discourse is chuddy grifters jerking themselves off while bullying people for not "grinding" hard enough, no matter that person's situation.
The fact that South Park unironically peddles Eric Cartman as the good guy, multiple times.
Eric Cartman has become a role model for multiple generations of men, under the idea that evil is good and good is evil.
I've heard so many claims that Cartman wasn't supposed to be a role model or emulated, but he was a Rick Sanchez prototype and pulled in the same kind of admirers that emulated him and what he stood for (himself).