There are many non-Western writers, so has many topics not covered fully in other English encyclopedias.
Rating system in place.
You can find interesting articles on some obscure town or a bizarre hobby written by actual residents and practitioners. People with a passion for a field or topic are those who contribute. See Ocean sunfish
Information in Wikipedia is hyperlinked, not linear (like a textbook).
Currently about 10,105 are categorized as good articles (about 1 in 341) . “Good articles are articles which are considered to be of good quality but which are not yet, or are unlikely to reach, featured article quality….In short, they should be well written, factually accurate and verifiable, broad in coverage, neutral in point of view, stable, and illustrated, where possible, by relevant images with suitable copyright licenses. Good articles need not be as comprehensive as featured articles, but they should not omit any major facets of the topic.”