After watching the Prequels, it's obvious GL intended for the Jedi Order to look cold, shallow and out of touch with the Force. That's what you have to understand about the Jedi during this time. They followed and were held to a strict code that disallowed any personal feelings and attachments with family and friends, but it wasn't until after Qui-Gon communed with Yoda and Obi-Wan from the Force had they realized they had been wrong enforcing such a dogmatic policy. I imagine that this whole Jedi Code that we have come to know of in the Prequels was something that was implemented right after the millennia ago Sith Empire had been defeated, in order to better ensure that no Jedi would ever fall to the Dark Side again. I imagine this is also when they started to lose their once powerful connection to the Force, which eventually lost them the ability to Force Ghost, too. It's almost as if the Force had turn its back on them in order to teach them a lesson, sort of like in the bible where God turned on the people during Noah's time.