There’s a big difference between a change which modifies the languages API, and one that just modifies the implementation of the API. Given GoLangs compatibili

There’s a big difference between a change which modifies the languages API, and one that just modifies the implementation of the API. Given GoLangs compatibility guarantee, any mistake in the design of a language API has to be preserved forever, and is very difficult to improve. But implementations of the GoLang spec and language APIs are much easier to evolve. There’s nothing preventing the Go team rolling out future improvements to deal with this issue, without having to worry about long term consequences. There’s also nothing preventing other implementations of the GoLang spec choosing a different approach.