It will continue to be a problem until Disney chooses to do something about it consistently. CMs aren't going to be confrontational and generally are too busy to alert management/security for something like that. In the last few years I have witnessed several incidences of behavior that "isn't allowed" that a CM asked a guest to rectify, and the guest either flat out ignored it or told the CM "No." This includes smoking in lines and bathrooms, vaping, drinking by the pool, and general things that are in place to keep attractions running smoothly (i.e., line progression, seating). Guest behavior is certainly not improving, and as Disney's prices increase the entitlement behavior will continue and escalate.