Most of the butthurt from a previous generation M owner goes away when he/she buys the new one or just loses the will to troll.
The E46 people whined about the E92 for a solid year. "It's too heavy, the steering sucks, looks girly, THERE'S A FAKE HOOD VENT OMG, " etc etc. Then, as befits the old, they either died naturally or were eaten by predators.
