Everyone has treats that they're biased towards and treats that they're biased against. In the end, I don't see how one set of treats (sports) is noticeably more harmful than another set of treats (movies, games, anime, YA novels). You could argue that a particular sports fandom like American football is very obviously more reactionary, fascist, jingoistic, and in general terrible than other sports fandoms or fandoms period, but sports as a whole? It's pop culture, and in a reactionary society, pop culture will always be some shade of reaction. Pop culture is a key component of the superstructure that socially reproduces reaction. You can't escape it.

I personally don't tap into pop culture these days, partly for the reason above, partly because I don't really get personal fulfillment out of pop culture, and partly because I realized that even if you share the same taste in pop culture as someone else, it doesn't actually help you socially and emotionally connect with them, so why bother? But I'm not going to stop rolling my eyes at some weeb or gamer making the same "sportball" joke while they gush over some slice-of-life anime or AAA game that nobody, including them, would remember in a year.