Ok. There are some problematic people in any community (although I would require more scientific data instead of personal anecdotes to be convinced, e.g. comparing stats related to this behaviour across different PLs with meaningful statistical metrics). I think this is more of complex sociological question than some people make it out to be.
What I see is occasional people being aggressive rarely. The are disagreeing on a principled/reasonable manner. Those who are Rust fanboys (or whatever you implied) are suppressed/downvoted etc.