What's culture got to do with it? If I wanted LLM responses, I'd have prompted for them myself. This is true in every single culture. The very fact that I asked a person means that I want the information they can provide, not LLM information. There is no culture in which that is false. So there is no culture in which providing LLM content is a useful response.
How you politely communicate that you don't have anything to add? That varies by culture. That LLM content is not a useful response? That does not vary by culture.
If in my culture I can't tell the boss 'I don't know' 'I can't do it' and I am handed a machine and told it's an answer machine, I can understand this conflict coming up. OP specifically said " I don't even entirely disagree, I just think it's worth reflecting on". OP is saying there might be dynamics that can be resolved with understanding why you are getting AI.
How you politely communicate that you don't have anything to add? That varies by culture. That LLM content is not a useful response? That does not vary by culture.