Please invest < 2 min of your time here (Massa/Kubika, fuji 2007) - actually FFWD to 50 seconds to see the horrible violations begin ;-)
https://www.youtube.com/watch?v=AnxUu36-uYw
and try to imagine how many penalties those 2 would have racked up in today's F1.
That's in a nutshell what is wrong with today's model.