I mean, from my limited experience of Go, it's not exactly a language that tries to help you avoid unexpected runtime errors or anything, so maybe they figure Go programmers are already used to gotchas like that.
Probably didn't know about the "edit" button. I used to reply to myself before I learned about it. (And I still do, when the two-hour edit window has expired.)
Well actually, i think i did consider editing it, but it felt like my first comment stood fine on its own, and i'd leave the follow-up comment to be downvoted separately