There have been many situations where I'd rather use another language, but Go's tooling is so good that I still end up writing it in Go. So hard to beat the build in testing, linting, and incredible compilation.

Absolutely.

The Go team has built such trust with backwards compatibility that improvements like this are exciting, rather than anxiety-inducing.

Compare that with other ecosystems, where APIs are constantly shifting, and everything seems to be @Deprecated or @Experimental.