why are folks arguing about circumcision again

Folks, circumcision of all genders as a method of hygiene was popularised in the context of a desert (sic) before the invention of antibiotics, industrial personal care products, and tiktok lifestyle coaches. 

There is more than sufficient grounds to practice it as a matter of religious preference. There is no need to justify that preference, by contaminating it with shoddy arguments.

Whether religion as a whole is metaphysically equivalent to aesthetics, is a related, but separate discussion.