The fact that we can talk about "generics" at all means you're wrong. Any general-purpose programming language has to solve the same set of problems and the ways different languages solve them are often recognizably the same approach. And Go is very, very similar to Java 1.4.
Except for multiple return values, easy concurrency, implicit interfaces, real value types, pointers, functions as first class types, closures, no inheritance, no exceptions.... but yeah, other than that, they're totally similar languages.