I have done translations and even for my own language I often use an LLM. It's the one thing they are actually amazing at. It's also probably not about "anybody noticing". It can very much be a single developer doing it on their own ChatGPT account and the QA didn't notice it.
I really don't care about this stuff though. The AI label should be for gen AI and not revising some text or translation imo.
Lmao.
What a joke.