I'm leaving the stupid to the likes of you and Ffreeloader. The pair of you are simply flat out nuts. There isn't a ban, that's all in his (and apparently your) head. You can't stop involuntary bodily movements. You can't put the whole population in strait jackets to ensure that nobody subconsciously touches their face. If anything really needs to be explained further as to the why's then the lunacy gets worse. Advising people to reduce hand to face contact is sensible. It's not some form of insidious attempt at government thought control as per Ffreeloader's insane posit.
7d7 is playing his infantile semantics game again. From a purely physical viewpoint, you could put everybody in straitjackets. That of course was not what you were referring to when you said " you can't". 7d7 is either about 14 years old, or simply not well., Or maybe both.