Well, I'm not a "BMW fanboi", but I AM a car enthusiast, and I don't know of these problems you speak of. I previously owned and auto-x'd one (E30 M3), my family owned a couple BMWs previously (E39, E46), my girlfriend owned a couple (E39, E60), and I currently have 3 friends who've owned/own them (E46, E90, E92, F10). None of these various cars ever had "ridiculous amounts of maintenance" while I knew them.What citation? Just ask any car enthusiast that's not a BMW fanboi. They'll tell you all about it. BMW fanbois tend to overlook the ridiculous amounts of maintenance these cars require nowadays. And it's all because BMW only cares about the first owner who lays out most money. And then to hell with all of the subsequent ones.
That is why I asked for a specific reference, like an article or some study that showed this to be the case. Maybe all of these cars that we all owned just happened to be luckily put together well, I don't know. As it stands, with you offering no real evidence of this widespread fragility and expense, I don't believe it. It will take more than anecdotal "go ask X, they'll tell you" statements to change that.