South Park

Being honest, I don't know much about South Park myself. I watch a few episodes that my friends recommend to me every now and then and that's about it. Since I know a thing or two, when content from the show appears to me (and believe me, it's pretty hard to exist on the internet without seeing South Park stuff) I click on it since I feel like I know enough to get the context, and from what I've seen, there are a LOT of people who know just as much as I do and still interact very often with the fandom, which is something I've never seen in any other community before. There's also a lot of people I've seen that get bothered by that, whenever some Kyle fanart with freckles pops up for me on Pinterest there's always a lot of people in the comments saying there's a whole episode about how he's a "daywalker" and doesn't have freckles or something. Are people who haven't watched the whole show/don't know some major stuff about the characters posting about it actually a problem? Is this something that bothers most fans or is it not a big deal? I've never seen this happen as much as it does with stuff related to South Park, so I'm curious.