You mentioned Reddit. Rust's subreddit had at the time over 80k subscribers. The subreddit massively piled on the maintainer of Actix. This harassment campaign was so massive that core Rust members felt obligated to write public declarations how Rust should invest in community building and, with the Actix case as an example, whether they could actually reject contempt culture.
It was not an isolated bad apple. Rust's community is renowned for being toxic, hostile and abbrasive. This topic is underlined time and again even in HN. It's not possible to hide this fact.