For the most part, why would anyone devote all that energy to complain about someone they don't like or admire? Don't we typically want to avoid things and people that we don't like? Maybe people incessantly complain to others about those they claim to dislike or hate because they do have some sort of issue that they are hoping to resolve. Maybe it's an issue of unreciprocated feelings, envy, or something more deep seated. I'm thinking of people who complain constantly about their ex-significant others, or maybe a coworker, or something like that. Also, maybe people like to complain about others to receptive parties hoping to build a bond based on disliking someone.
I have no idea why someone would suggest you are anglophobic. So, I'm not sure how to respond to that. I was referring to individuals, not entire populations of people. I thought OP was referring to individuals. I didn't really address the pop culture phenomenon of the Kardashians... But I still think people who bash them frequently do so because they envy their wealth and celebrity on some level. Sure, the Kardashians may offer very little to humanity, but there are many things out there that do. So if someone simply isn't a fan or the Kardashians or doesn't like them, it seems that the reasonable thing to do would be to not watch them on TV or etc., and to spend time on other programs that are more meaningful and interesting... instead of complaining about them on a message board.