Most of the improvements made to any language don’t expand the community much. And they don’t have to, because that’s not the point. The point is to improve the language and ecosystem to help make better software.

Generics support is a ubiquitous feature in static programming languages. If it was included on day one in Go, nobody would have blinked an eye. This is only such a controversial topic in Go because the language maintainers made it one.