Yes, that reply provides convincing arguments for not merging the Bun fork, as it interferes with Zig's own roadmap for achieving even better results, while continuing to improve the whole language.
This was probably a joke about a lot of developers delegating coding to LLMs which are usually non-deterministic (which I personally think is less of an issue than LLMs not having specified behavior like programming languages do).
Bun's fork will exhibit indeterministic behavior.