I feel like it was clear that Cartman was representing the racist right wingers who made anti wokeness their whole identity, meanwhile the other kids were normal folks who cannot make sense out of some characters suddenly genderswapping and preaching about social issues.
Stan and Kyle literally said they didn’t care about race-swapping.
The point of them was that the issue isn’t diversity, the issue is just lazy writing.
Miles Morales was used as their focal point because he is a race-swapped Spiderman who were in storylines that did preach about social issues. They like Miles because he’s actually written as a real character instead of a cash grab.
That’s what good writing does.
However, that doesn’t change what perceptions were/are across the board.
https://www.reddit.com/r/Spiderman/s/CFYF5YUMD8
Its funny how insanely accurate SP is sometimes.