@solitha
Even more fundamentally — because genuine care about citations is perfunctory or nonexistent in practice until college, or •maybe• a very fastidious high school class — Wikipedia can be a darned good as a starting point, or for a quick “usually not too wrong” answer.
Student do need to learn that you can’t take Wikipedia or any other source (primary or secondary) as complete truth. They also need to learn how to work with provisional knowledge: “Look, not 100% confident, but this Wikipedia article that challenges what I thought means it’s •probably• me that’s wrong.”