When a man becomes aroused by looking at a magazine centerfold or watching a stripper perform its because he’s attracted to her body parts, not her personality because at that moment he has no idea what that personality is. Have you never been asked “Are you a boob man of a leg man?” That by definition is objectification. It’s how a man rolls but many are afraid to admit it in today’s PC culture.
You’re making the same mistake Prager made. Attraction comes before arousal. Objectification of a given individual can only come after attraction. Systematic objectification of a particular body part (i.e. Are you a boob man of a leg man?) can only come after multiple times of attraction and arousal. Prager is mistakenly not making proper distinctions. He is lumping in all these things as objectification. Objectification is not natural as is attraction. Objectification is a learned response-based behavior.