Cycling shorts are tight because they are more aerodynamic than let’s say baggy pants.
Cyclist will pay all kind of money for a handlebar or a bicycle that it is a little bit more aerodynamic. I mean hundreds possible thousands of dollars. So tight cycling shorts are part of the cyclist attire.
It would be as if I ask a swimmer not to wear a swimsuit!
I get it, cycling is practiced on the road and not in a closed circuit. But I can assure you, most cyclists don’t have you (or other females) in mind when they buy their cycling shorts and jerseys!
Hopefully you won’t encounter more of us when you are picking something up!
Pablo