I need to find it, but I remember it was "we discussed it, and no, we decided not to" sort of answer there. There is also earlier explanations (from Rob Pike I think?) that was "we did not like how it looks like, couldn't find a nice looking syntax". The whole discussion left me with a bit of eery feeling, and left me with a bit of a sour taste (together with "error handling" one that I kind of tried to participate in). I pretty much stopped actively following golang-nuts after that, and now only look at proposals through meeting notes that Russ posts on github [1], where you can see accepted/not accepted status immediately.

Btw, there is another saga (drama?) unfolding on github proposal discussions over sum types [2], and judging by the past experience I don't have high hopes for it to get into the language.

[1] https://github.com/golang/go/issues/33502

[2] just one last I saw today, but there are more tickets about same or connected issue https://github.com/golang/go/issues/41716