If unlicensed personnel are allowed to place catheters it greatly devalues the licensed veterinary technician. Another problem is  they are not educated in anatomy or trained in proper placement which can cause irreparable damage. I first hand have seen unlicensed personnel attempting to obtain blood from a patient with very little success or care for what damage they are causing with every mistake. If you were seeing your doctor would you let a car mechanic draw your blood or do you prefer licensed, educated nurses?? You said the nurse I’m sure. Animals deserve the same.