There are certainly high expectations in the Rust community about doing things perfectly. But I don't think those "async ecosystem" discussions are a good examp

There are certainly high expectations in the Rust community about doing things perfectly. But I don't think those "async ecosystem" discussions are a good example of productive discussions. I think e.g. in C++ there had been far more expert talk on standarization, within expert groups - like for the standarization of executors or the networking TS. And yet after 5 years or so nothing had been standardized yet. In Rust the amount of people that actually work on the low level details and try to make things better is likely < 5. But there are a lot of expectations from everyone else about having perfect interoperability.