YIKES! It might be.
With our first Yorkie, we made the mistake of trying a new groomer when the established one retired. We specified a summer "trim."
When I went to pick up my dog, I DID NOT RECOGNIZE HIM.
He looked like, as a friend so eloquently said, "a peeled onion." I was ballistic and the poor dog ... he hid under the bed for the first three days. Took the rest of the summer before he even had a puppy cut coat!