its not just middle aged women though, and the term itself is used for even younger women and men isnt it. I get the character but using the name Karen for it is problematic, and it is just a part of the societal double standards similar to concepts like the BLM movement, beyonce releasing a film called "black is king" (iirc she admitted she was referring to the African race with that title). Stereotyping someone based off their name isn't far apart from stereotyping on other traits, and theres plenty of other names where it would be unacceptable to joke about them, but sometimes exceptions are made like with Karen, or Joe/John, or even Tyrone/Chad...i don't deny that there is a push to create hatred between genders and races, but obnoxious entitled middle aged women 100% exist. And the meme is not just pushed by media, it's also driven by people somewhat recognize the "character" from real life and want to make fun of it.