[TylerE]

Because it's completely factually wrong. Go is not AT ALL dynamically typed.

[Peaker]

Go is more dynamically typed than Haskell. That is, it leaves nullability to runtime. It leaves parameteric polymorphism to runtime.

Whenever there's a static type that Go cannot express (and there are plenty of those!) it is effectively dynamically typed about that property.

[tome]

Right, Go doesn't have sum types for example. (Or at least, it didn't. Does it now?)