You can sigh as much as you like -- you were the one changing the goalposts. The other problem that you miss is the differences between police districts in terms of culture and mentality.
Thank you for giving me permission! You missed the point. No, I didn't miss the difference between police districts either.
The point being, very few police officers would randomly stop a person and search them so they could get a cannabis possession bust. They don't (generally) care about possession as a sole crime.