I think there might be a connection between Go's pragmatism and the culture fostered around it and Rust's correctness and its culture.
On the other hand, it could be that Google owning Go makes the bigger difference. I know that Ian Lance Taylor created several versions of generics that got shot down, which must have been frustrating. However, I don't remember hearing the slightest bit of internal conflict from the core team. (I pick on generics because it was the largest and longest "conflict" in Go's history.)
The primary language developers/owners work at the same company, so presumably they have more bandwidth (behind closed doors) and more financial incentive to provide a united front. Or, they're just a pragmatic group of engineers with drama turned to -11.
