Honestly I personally think we should be happy with those people putting ///M merchandising badges on their cars (with respect to their proper badging). Of course not everyone thinks this way, but I can imagine the most of them buying and sticking the emblem somehow having respect for the real M cars/M brand and/or (diehard) fans not able to buy these awesome machines.
I'm not talking about people 'up'badging or all the other obvious fake badges of course