I see... yeah, even though what you see in this pic isn't the crotch, as I have explained, pics I've posted in the past show moose knuckles and weird wrinkles at the crotch often. I have serious trouble fitting into the upper portion of RTW pants and MTM doesn't help much. Got a wide lower waist (you might call that a gut, though it's not exactly the same thing), leaving a lot of empty space at zipper level which wrinkles in unsightly ways when not standing perfectly straight. Those that have undergone dramatic weight loss might identify the problem.
Maybe you need to grow some balls? Kidding. I lost about 100 pounds and I have no idea what you mean, lol.
Surely it is stylistic, but you could argue it is there to put a boutonniere through. The second buttonhole replaces the bar tack on the underside of the lapel. I don't like it.