I think she means isn't it illegal to Crop your dogs ear "on" your own. Like, a backyard job. And yes, it is illegal. At least it is in the US. That is not what is being described in this post however. Here, they are talking about helping the ears stand/or their shape "after" they have been cropped, professionally, by a vet.
"If I am going to get down on my knees and ask a dog to take a killing for me, I want him to be a friend of mine."
APASA: Aint Pit Aint **it Association
To be better educators we must adress both the answer to the question, as well as the ignorance at blame for the question.