"It's not a change in philosophy, it's a change in technology. Turbocharging is better for fuel savings and CO2."
Forced induction has been around since the late 19th century. M cars have always had the opportunity to utilize FI, but they didn't. I would argue that this is a philosophical change – fuel savings and CO2 emissions now take precedent over the driving experience. Whether this is good or bad can only be left to debate.