If I were to replace only one word in your question (GOLang -> VBA) I am pretty sure you wouldn't need a Microsoft official to answer it even though Microsoft invented VBA. Some professionals with X many years of experience in the field, proper developers not people who happened to record a macro and modify it to their needs could answer the question for you.
Maybe the answer wouldn't be credible (like it didn't come directly from the inventor) but it would give you very good insights about why, when, how, etc. and justification on the scientific background ( ie. VBA was derived from VB6 - it can't support Inheritance because ... ) Not all answers on Stack Overflow reflect the truth, I happen to see OK, highly upvoted answers which don't actually explain the great detail nor depth.
I agree it probably requires the developer of the language to provide a 100% credible answer not a speculation but I guess it also depends on the language itself. I personally find this question suitable for Stack Overflow and if came across it would probably upvote it (only if it had more content in it - some resources indicating this or that, some justification) :)