It's easy to flame young language projects, I don't find that compelling. I don't find the original description compelling either but that's not to say there won't be some kind of support for generic programming or correct hash tables in their standard library (with all the bells and whistles that you need, like randomized insertion order, reasonably fast performance, perhaps optimization for ordinal keys like a btree).

What does throw me off about some language projects is the rejection of "complexity" either in a compiler implementation or language feature because it is "complex" - despite decades of research and experience in other languages that some of those features are actually super useful (and also ways to get them wrong or right!). I'm not sure if this is where Hare has landed on generic programming, but it's an ethos I see in a lot of "C but not C" languages that I don't think is a sound approach to language design.