They say the definition of insanity is doing the same thing over and over and expecting different results. While that may not be the actual definition of insanity, it is quite applicable to the use of trip rates in traffic engineering. To rephrase... Approving the same type of development with the same amount of parking with the same type of road improvements, and expecting more people to walk, bike or take transit, might not be insane, but its certainly not smart!
Every town and city the world over likely has a vision with goals and objectives related to reducing the number of automobile trips. The ones that will be successful in doing so, will be the ones that break from the norm, and approve developments that are different from the norm. Effectively creating a new normal, one that is sustainable and supports growth in a manageable way.
Only by creating a development where those that choose to live there are happy to live with restrictions on car use, will the development actually result in the type of trips preferred, i.e., walking, cycling, and transit.