You're making things up. Not a single member of the Go team ever said "we don't need generics". In fact, the FAQ stated from day one that they "continue to think about it", and that "Generics may well be added at some point".
Also googled and found this:
http://lambda-the-ultimate.org/node/4554
which includes this section:
Go might have generics in future
with this text:
The Go FAQ recognizes the issue and says that generics may be added at some point... http://golang.org/doc/go_faq.html#generics
Considering how Java generics turned out I am fine with the Go team taking the time to think about a proper design for generics in Go :-)
By ted stockwell at Tue, 2012-06-26 15:03
[1] The golang.org link above about generics also says this:
We haven't yet found a design that gives value proportionate to the complexity, although we continue to think about it.