The open source community is built up by many project leaders with unprofessional attitudes. Honestly I think a younger version of myself would have resonated with the post. I'm almost certain there are many folks who will see the post as a net positive for addressing the bun rewrite. Zig is full of people who think they are strong enough engineers to avoid needing tools to solve issues for them and the post largely says that bun was written by weak engineers and they were to blame for its problems which will resonate with the community.