That doesn’t mean it shouldn’t exist in a fictional universe. If YouTube can exist in Big Nate, so can TikTok, anyone’s opinions on it don’t change that it’s big enough for it being mentioned to make sense.
Plus it’s been said that one of the reasons his teachers and father are so disappointed in him is that he’s gotten decent grades before. (Except maybe in Social Studies)
Out of curiosity, what do you think is the worst strip of all time?