So, just that I follow. Go guy claims historically never A.

I point to Pikes blog which clearly said A.

So given these two points I should implicitly discard evidence (in form of a blog entry by one of the Go creators) in favour of a statement that is clearly at odds with it? His connection to Pike or Go does not change the text on the blog, unless you disavow Pikes role in the creation of Go his distaste of generics and his clear classification of them as unnecessary remains a fact.