@qsort: To give you an analogy, think of the "original" wikipedia article as the equivalent of an academic paper. It is absolutely the right level of detail for a particular audience (with references and links and even fancy language) whereas the simple wikipedia article is the equivalent of a NYT article introducing the same idea and probably going a bit deeper.

As a further analogy, if I had to learn about Covid-19, I'd likely start with NYT (no affiliation) and then move onto Nature/Science/BMJ