Definitely. A standard or not customized chair can cause more harm than good. People come in all shapes and sizes; their chairs must be designed to fit them. In severe situations, a standard or not customized chair may:
Cause significant physiological and psychological problems
Lead to an increase in dependence because it’s not used due to lack of comfort
Cause pressure sores, or decubitus, due to improper cushioning
Become obsolete quickly if not configured to “grow with the child”
Become a major expense to replace or reconfigure, because most funding sources will only reimburse for a new chair every five years.