Go outside and find the first cop car or playground you can, start swinging your dick around and let me know if the government has the legal right to arrest you or tell you to wear an article of clothing or not.
Also, this:
https://www.theguardian.com/world/2007/jun/14/usa.haroonsiddique
If the argument in favor of mandatory clothing laws is predicated on social decency, something without actual physical harm to a person, I would imagine the difficulty in arguing that actually putting others lives at risk during a pandemic is going to be a tough contradiction to square.