It can cause issues, but not always.
I myself ,rip any that are born that way.
ABGA does not frown on those kind of ears and the goat can be shown.
I agree, they still can be ripped. I wouldn't cut them apart, because if the goat jerks the wrong way, you may slice the ear in two.
You will need someone, that is strong to rip the ears apart. By now, it will be harder to do. At birth is the best time, things are still soft and easy to rip.
Make sure after you rip, that you put something on it, don't cover it leave it exposed to air and put something on the ear, such as duct tape, to help keep it flat for a few days.
It is up to you, whether you want them to remain flipped or not.