Since this isn't an ongoing sale thread, I will chime in on this. You're right, there is nothing legally wrong with what he is doing. He has the title, it is his truck. Scrap it, run it into the ocean or flip it, it's his "right". I have two problems with this particular flipper. (1) He is passing off someone else's intellectual property and images as his own. This is disgusting. (2) it seems that he misled the seller, implying that he would keep it around. If you're a flipper, fine enough. Everybody is entitled to make legally money their own way. But be big enough to admit that you're a flipper. You'll add little to no value to the vehicle before selling it to someone for a profit.
My guess--and this is speculation--is that most sellers would be willing to take a lower offer from someone who will take care of and love their vehicle, particularly our pieces of junk, than a flipper. If I know something is going to get flipped, I add a premium to the lowest price I would usually take from someone who will take care of it.