I'm surprised you're so skeptical. Even more so because you, unlike me, are a guy, and a quite impressive one in size too, meaning you probably know of which you speak. That along with your describing extensive experiences with other guys through the years would make me think those 3 photos you post links to would hardly be judged by you as strong arguments against the authenticity of what I'm seeing with my own two eyes in those photos of David Caputo.

For one thing, 2 of those 3 shots aren't framed or angled well enough to indicate anything one way or the other, and the middle photo seems to show that there in fact really is something of substance in the guy's tidy whities. And, anyway, don't all you males have the sort of equipment that can be folded and tucked away, so that even something very wide and long, similar to a bedsheet, can end up looking quite compact?