I’ve definitely been in the position to ask a client why is it that everyone knows what should be done to their tree except the tree guy!
In one case, we had spent a day working on 2 very large Silver Maples above a residence, 10% tip reduction, installing new cables since the previous were out-grown, removing all deadwood > 1” diameter, etc… A week later, her contractor came to look at the house and said the tree was a problem.
She was initially happy when we finished, but then someone had to plant seeds of doubt in her mind. I had to squash those seeds.