I'm sorry, but management has no one to blame but themselves for this. It's obvious from the video that multiple CM's have no specific training on what to do when a charming man shows up at the turnstile without a ticket and says he'd like to go into the park.
There's a half dozen different turnstile CM's shown in that video and not one of them spoke up or tried to get a supervisor over to help, which tells me this is a systemic problem and not just a case of winning the lottery by getting the one incompetent CM on duty that day. All of the CM's on that video seem mildly incompetent and/or very poorly trained and supervised. And that's just the turnstile CM's, because the ride CM's not paying attention to Fastpass are equally incompetent.
Again I ask... I'm a charming and well dressed older man with an iPhone X with several photos of me at Disneyland on it, so why the heck do I pay for my Signature AP every year? It's obviously very easy to get into Disneyland and DCA for free, and then go ride E Ticket attractions without a Fastpass.
Disneyland management clearly aren't watching the store.