Look, all you need to do is push a giant horizontal wheel for 16 hours a day from the age of 9 until the age of 18, and you'll look like Arnold Schwarzenegger.
I've heard a couple of good pro fighters say the bench press isn't functional, but I think the key factor is that they were boxers, so the bench wasn't really that functional for them.
I will take devil's advocate and assume that the ts might be a bench/curl monkey. In that case, the friend might just be trying to help him out.
Your friend sounds incredibly ignorant. Use your non-functional "titty pecs" and limited range of motion to murder him and jerk off on his corpse.
YOUR FRIENDS RIGHT.
USE DUMBELLS and FREE WEIGHTS.