Then why are you doing it for a guy who (for all you know so far) might be married or have incompatible politics?
Would you delay your response for an additional 15 minutes, or occasionally not reply at all in a text conversation with your little brother?
At most, it is a reliable source of advice for women who want to improve their chances with the opposite sex.
Since I've already explained how you should reply to a man's texts, the obvious follow-up is to explain when to reply to a man's texts.
So when he texts, answer him naturally, genuinely, authentically.