Calling people you disagree with "melodramatic", "unserious", and questioning their technical acumen is not a way to navigate technical disagreements. Those are rhetorical tactics meant to make people feel bad and get them to shut up.
Bully behavior like this has no place in the Rust community, and we need to call it out when we see it. Disagreeing is fine. Even "bad" or poorly reasoned arguments are fine. But belittling and insulting others absolutely never is.