An encyclopedia is not a source. I don't think you fully grasp what any academic paper's source is. It must be a first-hand account or direct evidence. It is the research paper you mention, not the wiki article the paper was mentioned on. The problem isn't teachers afraid of technology. You can't use print versions of encyclopedia Britannica as a source either. Part of education is also knowing how follow academic rigor. Remembering and understanding are only the first two steps in the process. Applying (writing the paper) is the third step. But if you fail to understand primary sources and how to conduct academic research, then you will never be able to truly progress beyond that (leading to: analyze, evaluate, and create)

I feel like this is one of those bell curve memes. At the start you see that it's publicly edited and you turn away. Then you see the extensive source citations and why not? Then you get involved in editing Wikipedia and you see what constitutes a "source" and what happens on the talk pages. And you're right back to not ever citing Wikipedia.

Seriously though, Wikipedia isn't going to be nearly in depth enough for any research paper worth a damn after you do your first couple. And that's because those are meant to teach you how to do research papers. Wikipedia isn't as bad as AI but anyone who's neck deep in a field will find problems with any Wikipedia page about their field. And it just gets worse the more politicized your field is. So the answer is as it always was. Go to the primary sources.