That's false. Go provides a smattering of blessed polymorphic types (slices, maps, chans, pointers) and functions (len, append, delete, chan send, chan recv) that go a long way. They are horrifying to civilized PL enthusiasts, but they cover a lot ground.

As I said in one of my sibling comments, navel gazing isn't going to get you anywhere. And Go isn't the only statically typed language without generics. C has that designation as well.