I have made several quilts for my granddaughter, she is 17 months, and she hasn't slept with one yet. But that doesn't mean she hasn't used them. I made a flannel quilt for her that my daughter put on the floor so she could have tummy time. Many of the pictures of my GD during her first year are on that quilt. It was soft and made to wash. It was washed almost everyday. I made her a Dora quilt that she plays with. I also made her a quilt to go with all her bedding that my daughter hangs off the back of a rocking chair in the nursery. (My Avatar) She will use it when she gets to a big girls bed.
I just finished a flannel floor quilt for the daughter of a friend of mine.
It is true that they recommend you not use a quilt in the crib until the baby is old enough. But that doesn't mean the quilt won't get used.