The world has changed in this area for the worse in the 40 odd years I have been serving customers. We design and build millwork and kitchens and do so in a custom fashion for several hundred clients per year. I have 3 designers all of whom have practical experience plus design training.
Here is the new cycle; client calls you the expert and asks you to come up with a solution, the client then asks why you have done some of the things and then proceeds to argue and suggest that what they want can and should be done, we ultimately find a way to give them what they want, finally when they don't like the result they ask us why we didn't warn them.
They make us the expert, then they become the expert, and when things are not proper (or their friends don't think it is proper), they want us to be the expert again. I believe the internet and social media have eroded the trust they may have had in others and they believe they have to micro-manage to be successful.
Having said all that, like the original poster I would want to drive along with the load if it were practical but would certainly avoid telling them what to do!