Well first of all KISS is just not always better period. Think of carburetors vs. Fuel injection. Ill take computerized fuel injection ANYDAY over and old fashioned very simple carburetor.
What is wrong here is not complexity. It is POOR DESIGN. Which for what I am guessing he paid for his coach (around 500k) is inexcusable.
And this kind of thing is wht is being talked about on another thread regarding the Manufacturers rushing headlong to make ever bigger and bigger more power hungry RV's with little regard for customer or the industry and it's infrastructure.
In many cases like the OP's the manufacture valued bigger, more complex and showmanship over quality and elegant design.
My first BMW 733i back in 86? came with MANUALLY adjusted seats. but you could make those seats do anything and everything was so well balanced and easy to use you never had to shift your weight. Of course electric seats were an improvement but our idea of luxury has meant that we do nothing but push a button rather than appreciate a fine design and have more real options.