"If people come up with crazy implementations, it's their own problem."
Some people are turned away from C++ after seeing random bits of crazy language/template misuse, although when used sanely C++ could've served them nicely for their job.
Same thing is going to happen to Swift very soon.
https://engineering.kitchenstories.io/comfortable-api-reques...
Those function signatures are definitely not... self-documenting, I'd say.
Those signatures seem complicated to me because there's a pile of arguments and some of them are functions with extra annotations, not because there's generics involved. The equivalent signatures using interface{} (or maybe something more precise) would be likely just as noisy, if not more so.
The Go team needs to stop trying to control what people do with their language. If people come up with crazy implementations, it's their own problem. It's up to the Go community to provide alternatives to prevent those crazy implementations from becoming standardized in Go programming culture. Refusing to implement generics because programmers might abuse them is paternalistic and counterproductive.