The API may be a single function, but that package contains a non-trivial amount of code. The contribution this package makes to your codebase is not "a single function". However, at a glance, I agree with your reasons for liking it! And I'd be unlikely to vendor it directly into an app or dependent library for example.
EDIT: it feels to me like the CRC32 implementation contained in that library is a prime example of what the original article had in mind. There should be one global CRC32 function which every person could pull and reuse, instead of bundling it with their own package!
EDIT: it feels to me like the CRC32 implementation contained in that library is a prime example of what the original article had in mind. There should be one global CRC32 function which every person could pull and reuse, instead of bundling it with their own package!