It is open to interpretation, but here is mine.

I saw nothing in the first post requiring a BMW carseat. It said not to use a universal carseat, which i interpret as one without the Latch system. It says you can get a BMW carseat with or without the Latch system, which is true. It doesn't say you must get one. You can also get one with the Latch system from many other manufacturers. I think it was a whole lot of noise over nothing, and soon after, BMW improved the wording in the owner's manual.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue