Honestly, I think he'll view you as being petty for it. The teen years seem like a time for parents and kids to decide how big of a wedge they want drive into their relationship.
One of my two favorite teachers in high school, I still think somewhat poorly of, because I had to stand outside of her class as they recited the pledge of allegiance which I couldn't be honest in saying and include the phrase "under god." I even asked her if I could stay in and just skip the phrase. It would be dishonest and disingenuine to include the phrase as it invalidates the whole pledge if you don't believe. That was a very important point of order to me then. Now I don't make a fuss, I just skip it.
But as a teen it was very important to me in constructing my sense of self to externalize it that way.
