I don't really understand this type of criticism. People complained that Go didn't have generics, and now that they've delivered, people still want to complain

I don't really understand this type of criticism. People complained that Go didn't have generics, and now that they've delivered, people still want to complain for some reason. I can quite believe that the Go team wanted to be sure that the approach made sense for Go, that it was the right solution to the right problem and to keep to their backward compatibility promise. Experience is a good teacher. I really don't know why it matters in the slightest that they didn't arrive at that on day one.