I admittedly don't follow Rust or Zig very closely, but I think Kelley's comment is about the communities supporting the languages, not the languages themselves

I admittedly don't follow Rust or Zig very closely, but I think Kelley's comment is about the communities supporting the languages, not the languages themselves. The sense I get from reading a few Twitter threads is that members of the Zig community feel that the Rust community disagrees so strongly with some of Zig's design decisions that the Rust folks suggest that the world would be better without Zig.