I would argue that Go's focus on a small feature set made it easier to get right more quickly. The few Go designers knew what they wanted out of the language. T

I would argue that Go's focus on a small feature set made it easier to get right more quickly. The few Go designers knew what they wanted out of the language. They decided early on that Go would be very opinionated. And they were OK with sacrificing purity for simplicity. Rust has many more features than Go. (And language complexity increases approximately combinatorially with the number of features.) Features in Rust are decided more democratically. Rust designers are OK with a long (re)discovery period for features to find the purest design. I believe these differences in language authorship explains the churn that Rust has experienced relative to Go.