Sounds awfully familiar. One of our customer wanted a very specific option our system does not provide - because it makes no sense at all. But instead that the customer discusses what is good and what is not, based on our >40 years of international experience in the field, we just got a bunch of drawings telling me that I should do something in the way a political committee with no professional input had decided.
Customer pays for it, customer gets it. Fun fact: I know they will get sick of what they cooked up in no time, so I already installed a "kill switch". As soon as they get sick of their stupid idea, I can reverse it with a single option. Bossman says to take the same amount of money for switching it back, and he knows they will pay.