When I went to Jr. High school swimming class was naked.
In ancient Greece, men wrestled naked. Just because someone did something doesn’t mean it’s a good idea.
And nothing bad happened either.
When I was a kid, boys were naked when swimming at the YMCA. I recall some excuse like they didn’t want lint in the pool cleaning system. Makes me wonder now.
In you gym class did everyone where swimming suites in the showers? What’s the difference?