Yes,

Other adults can get through to your own kids
at certain ages. That does not mean that the parents are bad coaches. It just means that we need to let get some else's opinion - even if it is the same thing you have been telling them for who nows how long.

We try to follow the rule of no coaching you own kid at tournaments. That works pretty well. Your son or daughter tend to think that you are telling them to clean their room or take out the garbage during a match. In my own case - I'll bet that is what my son is thinking when I coach him from the stands. I have been told I talk loudly (yell) "get hand control or stand up. What are you thinking?" Anyway, responding to your question. It really depends on the parent child relationship. At the novice level and the younger open kids is where I notice the most potentially harmful parent/coach and child relationships. They all develop at different speeds. I have had several kids in our program that struggled in their early years and now are in a position to make some noise at the High School State Tournament. Proof - they'll develop when and if they are ready.