You are really over thinking this. He isn't asking you to tell him what to buy, he's asking for opinions, which he will weigh in conjunction with his own to make a decision.
As I said before, if I was on the fence about switching from Android to iPhone, I may ask for others opinions because others went through the same process, and could provide valuable feedback that could save me from troubles down the road, or bring up points that I never even thought about considering.
It's not the same as me just asking you what I should buy, and then going with your decision. It has nothing to do with how you were raised.