Ask HN: Areas for which Wikipedia is NOT the most comprehensive online resource?

It certainly is for mathematics and computer science (apart from some specialized areas like HoTT and complexity theory), and I've been told the same is true for physics, chemistry, and astronomy, though I'm not an expert in those fields so I have to take their word for it. It also appears to be true for biographies, conflicts, cities, and many, many other topics.

So for which areas of knowledge is Wikipedia NOT the most comprehensive resource available online?