As a former police accountability advocate, I'm reminded that plenty has changed since ending marijuana prohibition in our state. Police are now forced to change their ways and simply focus on whether or not there is imminent public safety harm due to marijuana use.
Could the public's safety be at risk though? If you are driving high, or operating machinery while under the influence of cannabis you could hurt other people. Being high at any place besides your free time where you are safe can be dangerous to the public.