I live down south, where I wear shorts even in January, so I don't wear pants. My shorts are just plain basketball shorts. Honestly, I never seen anyone look in that area, especially in a gym where there's about 80-90% men. They are solely focused on their workouts, or drinking/texting between their sets. No one pays attention, so it's the least place where you have to worry about that. Lol, I don't sit around watching people's crotches go by me. On purpose though, maybe once or twice in my life I had a .5 second glance at other guys' shorts, and there's nothing visible there. It looks flat every time.
There are plenty of gay, straight, lesbian, trans people in my gym. No one pays attention to anyone. Sometimes I look around and see a guy who seems to have a pre-T feminine body and then in my head I'm like "Ha, that's cool, I'm not the only one...I wonder if that's a bio guy or a transguy? Or maybe a very butch lesbian? Oh well anyways, NEXT SET!" 🙂 It's very unimportant.