The Zig lead is notably bombastic. And there was the recent Zigbook drama.
Rust is a little older, I can’t recall the specifics but I remember some very toxic discourse back in the day.
And then just from my own two eyes. I’ve maintained an open source project that got a couple hundred stars. Some people get really salty when you don’t merge their pull request, even when you suggest reasonable alternatives to their changes.
It doesn’t matter if it’s a blog post or a direct reply. It could be a lengthy GitHub comment thread. It could be a blog post posted to HN saying “come see the drama inherent in the system” but generally there is a subset of software engineers who never learned social skills.
This doesn't feel fair to say to me. I've interacted with Andrew a bunch on the Zig forums, and he has always been patient and helpful. Maybe it looks that way from outside the Zig community, but it does not match my experience at all.