I'll be blunt, the Rust community is not known for being a warm fuzzy place to go ask stupid questions and walk away not feeling like a dumb fuck. Hoping people will wander into the right place to ask rust questions is a non-starter.
You don't control Stack Overflow or Reddit, or any number of slack/discords, so I don't know how I'd address that problem, but it's true.
Reddit is also moderated, but the cultural issues of that whole site, as well as those of StackOverflow, are well known by now.
I do my best to set a tone and lead by example whenever possible. Most of the times I've seen threads turn sour, it is usually catalyzed by people being unwilling to listen and acting hot heatedly to begin with. I've seen r/rust discussions where the article being discussed was far more critical of the language/toolchain than this one, but with far more constructive communication style and substantive analysis. The quality of the conversation in those cases have been much better.
Feel free to point me towards toxic community behavior and I'll do my best to address it through every mean available to me. I can't promise that there will be dramatic changes, but I certainly do my best to call out bad behavior and try to foster a space I can be proud to belong to. Then again, I do not spend much time in any of the sites you mention, so I can easily be missing bad behavior.
I would also say that even if you don't want to interact with people (for any reason), that's not an excuse to not seek out official or unofficial documentation. There is a non-comprehensive list at https://www.rust-lang.org/learn.
The OP had resources available to learn how to deal with errors in a more idiomatic way than he did:
You don't control Stack Overflow or Reddit, or any number of slack/discords, so I don't know how I'd address that problem, but it's true.