> I think it's a bad thing that some people advocate for every language to have every feature from every other language

Not what I'm saying. I'm saying when smart people created Go, the forgot that null is a mistake, and sum-types are simply too useful in modelling the world to miss out on (pattern matching makes them a joy to use).

This was both well understood in the 20XXies; and I have never seen any reason from the creators of Go as to why...

> Scala

Scala is a multi-paradigm lang; that sucks on whole different levels. I'm not advocating at all that Go should be multi-paradigm.