It's more a statement about the community than him imo. Or maybe about what npm allows to be published. Nobody forced you to use is-odd, yet it's downloaded 200k a week, why? Because js' developer community doesn't know any better
As some people mentioned, most of the usage of is-even is by tools made by this person.
But the other part is that, he made quite a few development tools for beginners that scaffold new projects and pull lots of his packages as dependencies (especially the handlebars helper), which heavily inflates the number of "Dependents" in NPM.
The other issue is that, in the past, he managed to include some of his less-useless packages in some semi-popular tools.