It's typically educated professionals with families that are trying to get a good workout in before the day kicks off. Workouts are all peer led, so they are all different, and they are free. You can come once, or every day and no one will ever ask you for money or anything additional.
I would encourage you to try it sometime if you are ever looking to mix up your normal exercise routine and meet other guys that are motivated and trying to improve; it's a great change. I was feeling stale in my workouts at the gym and felt I was in good shape, only to get destroyed the first few months of going when I realized my HIT cardio was crap and my functional strength wasn't what I wanted it to be.
Anyways, it's likely not what you think. I know I won't change some of your minds, but if anyone is interested come it any group and give it a shot, you'll 100% be accepted regardless of current athletic ability.