I quite agree with that. Java & Go have a close typing system (static but not very elaborate, and java < 5 was lacking generics just like go), share a close philosophy (a simple language with no tricky corner, safer memory management, designed for programming in the large), have built-in concurrency mechanisms, and are even quite close when it comes to raw performance.
The history of many of the languages has been the same in regards to generics. C++ didn't have them, then templates where added. C# 1 didn't have them, but were quickly added (correctly) in 2. D didn't have them, later they were added. It is very common for a new language to avoid generics in the beginning, but it seems most come to agree, it was a mistake.
