I think that it's more important that they are out there, riding, being healthy, and trying to be fit. Who cares? I've ridden with many, guys, especially, who look like you describe, and they are super strong, fit people. Cycling clothes are what you wear cycling, to be comfortable. Maybe I have a certain lack of modesty, but I never worried about what others thought about me in cycling clothes, even when I started and was a bit bigger. And as far as cycling shorts "showing everything," well, they are men, and we all know what parts they have.
2015 Trek Silque SSL
Specialized Oura
2011 Guru Praemio
Specialized Oura
2017 Specialized Ariel Sport