Of all the things to complain about, you're going after the fact that wikipedia has 15 printed pages about important characters in a cartoon with over 750 episodes? This is a list of important, plot-affecting characters; you're just failing to appreciate the sheer scale.

At the very least complain about the species list if you want something ill-fitting for an encyclopedia.

The point is that "notability" seems to be a 1-to-1 proxy for "the popular culture and nostalgic recollections of < 25 year olds".

Which is ... daft.

That's a fine point but a bad example. We're looking at a couple dozen words about characters per hour of footage.