I've heard from several police officers that if they follow you for 60 seconds, they can find a reason to pull you over. If the seatbelt instigated that following, isn't it
exactly the same thing the OP is saying?
The issue the OP has is that changing your MAC address is synonymous with walking around in the dark, something law abiding citizens do regularly, but police better frown upon because that's when the bad guys sneak around. Personally, I played lots of tag after dark and had more than one negative interaction with the police as a result. Kids after dark can't be up to good, and hackers spoofing MACs can't be either!