I guess I don’t have a problem with this.
I struggle to write emails and would potentially use an LLM if that were an option. (Maybe.)
The message accepted the request, and was polite, showing concern, even. I assume it was proofread and deemed acceptable to the boss/reflective of their sentiments (although perhaps not copied well).
I guess I don’t see the offense here. Anyone who does see it care to explain why this is a negative?