How would one know? By definition, an AI is supposed to be indistinguishable from a human, at least in short text interactions. If it is easy to distinguish be

How would one know? By definition, an AI is supposed to be indistinguishable from a human, at least in short text interactions. If it is easy to distinguish between them (with an app like that mentioned), then doesn't pass the Turing test. I’d not waste my time being offended. Delete and move on. Don't invest more in them than they in you.