My original comment was directed toward your assertion that Protestants would object to the passage. I still have no idea why you would say that. Paul does not say or imply "must not".
I didn't say they would object, I said it's not their favorite +Paulian verse because it is never cited by them, yet they have a select set of verses they awlays repeat, but not the ones that talk about hair length, head covering and the like.