Rust syntax shoulders a load of semantics most languages don't bother trying to represent. They could have made it more wordy, instead, but chose the much shorter symbols, many of which can often be ignored when skimming, more easily than keywords would have been.

They have not loaded up the language with any unnecessary syntax. Go lacks the syntax because it is unable to express the semantics, and is (deliberately) a much less capable language for that. Rust is meant for professionals, so must be able to express whatever they may need to say, where Go was meant to keep junior coders out of trouble.