I'm on the same page with you that their AI stance is probably harmful for them -- but I think they wrote those as a reaction to the contributions from Bun and others. So your implied timeline is not entirely correct.
Zig’s response has been a serious mistake. The TypeScript team ported the TypeScript compiler and language service from TypeScript to Go for TypeScript 7.0. Did anyone interpret that as the team insulting TypeScript itself? I certainly did not.
No because Go and Typescript have wildly different use cases, and they explained in details the rationale for migrating the compiler, and why Go versus Rust. Their rationale makes sense, and did not throw Typescript under the bus (obviously).
What is more hurtful than somebody else making wrong religious choices?
That's just not fair!