Arrays and slices really have nothing to do with generic programming. Java has poor generic support (type erasure) and C++ has poor syntax and a bad design for

Arrays and slices really have nothing to do with generic programming. Java has poor generic support (type erasure) and C++ has poor syntax and a bad design for iterators. Languages with decent generics support have none of these problems. If this is 'armchair criticism' why do Go's designers say they are considering adding generics support?