Most on this forum know the difference but plenty don't. At the BMW drive day yesterday some people thought their M135i had the same engine as an M3 and didn't know that an M3 and M4 are basically the same car. They were very happy to have a small M3 for half the price! BMW is probably happy that most customers don't know the difference so are happy to pay extra for M bits on a cheaper to make car thinking they are getting the real thing and only enthusiasts actually care and they know the difference anyway.
Part of the reason to debadge the real thing.
