I think thats a bit excessive....but maybe there needs to be choice and maybe there need to be cemeteries where that sort of thing is embraced. After all who can say what is right or wrong when you are grieving, especially for a child.
When I was a teen my mother and I used to visit my Nan's grave and nearby there was a child's grave, a victorian one IIRC. The grave space had been designed like a miniature garden with little stone animals and I loved it. there had been dwarf plants as well but only the hebe and the stonecrop were left. I wonder if that caused shock and horror when the parents did it?