I think this may be a country thing. Here in the UK it has never been a problem for me, I have been a biker all my life. I still know elders who ride bikes, one has a Hyabusa, BMW S100RR, etc. Many others including mine which I will not list as it could ID me/them.
I remember one brother who came to the meeting on his bike, brought his suit to change into from his leathers but forgot his shoes. All through his talk people were looking at his boots squeezed under his suit trousers.
I must say I don't know anyone who rides a Harley however. They're such bad taste...….
(Awaiting multi dislikes)
George