I agree and it’s a vicious circle ; the reason this happens in the first place is because people are already self-conscious about their bodies in ways that previous generations weren’t (of course this is specific to time & place and there were other issues back in the day!). Getting to see the variety of naked bodies that exist IRL would surely help, but that’s exactly what one would be avoiding.
How do you know someone else is taking too long unless you also have been in the communal shower too long?
At my local gym, there were 12 communal showers, but it was common for a class to be scheduled with an end time at 6:00 or 6:30 on the dot, so in addition to the steady traffic from the pool, weight room, or the ergs, you'd have a sudden exodus of 20 or 30 guys (or 50 in January) all waiting in line for showers so we could get to work on time. Then (in spite of signs prohibiting phone use in the locker rooms) people started using their phones for messaging/emails, usually conspicuously held within the locker or otherwise aimed so that they couldn't be used for photos...then they converted the showers to 8 private cubicles.
Even with 8 instead of 12, it was no big deal if people were taking 3 minutes to rinse off the sweat. Whether you left at 6:33, 6:36, or 6:39 was not a problem. But if 10 or 20% of people were treating the shower like a sauna, luxuriating in the steam until their fingers and toes got wrinkly, throughput went down the drain along with those gallons and gallons of hot water... you might have to wait until 7:00 to take a shower after your 6:30 spin class.
Putting a lightswitch which had a 10-minute timer outside the cubicle, plus a sign urging users to conserve water and take showers shorter than 5 minutes, was a big improvement. However, lots of people would do everything they could to minimize perceived awkward nakedness in the communal showers, getting clean in record time, but feel no such pressure in a cubicle.
False dichotomy. How about only seeing "normal" naked bodies within the bounds of marriage, and banning porn?
I don't think this is a good thing. If you're not seeing any "normal" naked bodies, and are only ever exposed to idealized movie/porn bodies, aren't you more likely to get all kinds of body issues?