Why do some mothers nurse under the curtain if the law says we don’t have to? Well, it’s not really anyone’s business why a woman may want to wear a cover, so if you feel a curiosity overtaking you, please know it’s best not to ask. I’ll give you a few hints though, based on my own experience and what I’ve heard.
I’ve heard that nursing bibs/aprons/tents are an “American” thing and that foreigners are baffled by their mere existence. Thus, we could hypothesize the reason for covered breastfeeding is simply the influence of Yankee Doodle, but let’s not jump to conclusions just yet.