It seems like you missed a lot of the other things he said, such as "testing is built into the language," and "binaries are statically compiled and will work on any reasonable kernel." These may not be sexy features, but they are features that you need to actually make reliable programs.

And frankly, yes, Go's approach to handling errors is a Big Deal. It's counter to the tendency of the last few years to move more and more error handling into exceptions. In retrospect, we can see that that was a mistake, similar to the "natural language programming" dead-end that led to COBOL and HyperCard. Challenging the exception-handling orthodoxy is absolutely something interesting and new.

What makes Go so special other than the lack of deep class hierarchies? This is an "other than that, Mrs. Lincoln, how was the play?" type of comment. Go's type system is absolutely huge in terms of making it special. It would never have attracted the attention it did if it were just another Modula-3 rehash like Java, C++, D, etc.