All the Rust programmers I know are really happy to discuss the limitations and shortcomings of the language. It's possible that the problem you're pointing at comes from the word "reddit" rather than "rust" :)
Note: I've looked at the parent's comment history. The only one of them which was not a troll against Rust was a troll against the EU.
We use rust full time at my job, and griping about the language’s rough edges is a common pastime. The fanboys are loud and obnoxious but I can assure you they don’t make up the whole rust community.
Rust has its rough edges, but what people do is gripe about those in language development spaces. Then the rough edges get filed down in the next release trains, or sometimes the next language edition. In C++ they are totally unfixable.
