The difference is that going back to Go code you've written a few years ago, isn't nearly as bad as going back to Perl code you've written a few years ago!
And having written a lot of Common Lisp, Go code is extraordinarily straight forward in a sense where every developer writes in almost the exact same style.
This is not true for Common Lisp (even though it's not as bad as people make it out to be).
I feel the exact same way with C versus C++, even if I was the person to write the C++.