I always took "mansplain" to be an explanation taken to be delivered in a condescending way because of the genders of the speaker and receiver in question. The use of the term in and of itself usually saying more about the person using the word than the subject of the offense.
> because of the genders of the speaker and receiver in question
That's what I was trying to understand. ChatGPT doesn't have a gender, nor is it aware of the gender of the person talking to it, unless explicitly told. Wouldn't that preclude it from mansplaining?