Already happening. Law enforcement looks at what is worth pursuing and what is not. Ridiculous, petty bullshit gets the attentions it deserves. Sales of drugs to children gets a major focus. Meth, etc is a major problem.
Normal people smoking pot is not a problem. Sure, they terrorize a 7-11 snack aisle, but isn’t really a major problem.
Put the focus on the true problems, not the politically expedient wastes of time that target normal people.
Normal people don't smoke pot.