Wow. This is the first I've ever heard of WW1 being referenced as a hygiene standard. Do you have a source for that?

The world war is called the world war because a ton of countries were involved and the US were the only country that had problems with foreskins?

I don't think this is true

They're not wrong.

Merriam-Webster

mutilate
verb
transitive verb
1 : to cut up or alter radically so as to make imperfect
2 : to cut off or cause severe damage to a limb or essential part of

But it has been mutilated.