https://pkg.go.dev tends to sort packages by the number of other packages that import them, which is a decent metric for how popular/important a package is (although there is an open issue for giving more options: golang/go#36952)
However, this extension seems to use a different order (lexicographic sorting, maybe?). I find that often, I end up clicking through to a fork or otherwise non-useful package instead of the one I expect, which would be the top result if I searched directly on https://pkg.go.dev.
One example I run into frequently is github.com/spf13/afero:

vs
