It's important to separate the community ethos and the rust core dev team policies, because I'd be surprised if the official stance of the rust team would be condescending to other technologies.
Have you met humans?
I’d be shocked if people working on and passionate about thing didn’t shit on other thing. That’s natural and even good in moderation. It’s up to a leader to keep it under control.
Rust is my favorite language in most domains I program in; I've learned to ignore the online rust OSS community due to a mix of preferring heavy abstractions (then shaming your code if you don't use them), and rude behavior.
This is fine, for the reasons you state: I can use the language and tools while ignoring the jerks.