I'm not sure there is much moral insight to glean from the show as an Objectivist. Some decisions Walter has made are very poor, and the creators have all intentions of making it much worse for him, ending season 5 similar to the end of Scarface I imagine.
But from an aesthetic point of view BB is incredible. I have never before seen such a well put together show in all aspects. I respect everyone involved for the skills they necessarily possess for the quality produced. I love to see ability from people almost no matter what the ability is, and I am thankful that in this case it's a show targeting my demographic.
Galt specifically states that the motor belonged to the Century Motor Company, so he could only leave it not destroy it. It is destroyed eventually by people looting the remains of the building.
