I have some sympathy here - generics is hard to get right, and language changes are forever. As a Go user, I have absolutely no problem with them taking their time on this and only introducing it (probably with Go 2) when it has been thoroughly thought through. There are workarounds (writing for specific types, go generate).
Generics have been around for decades. It seems very unlikely that Go will discover some entirely new way to implement them. They'll end up implementing them the same way they would have if they'd done it years ago. The tradeoffs are well known.
