I spent ten years as a geriatric psych nurse in locked units. None of this is shocking. Once you're in, you are in. I worked at a dozen facilities in that time, and chemical restraints, bad patient care, medication theft, you name it. The entire industry has very little oversight except for our once a year audit, and that was a joke.
My last job was at a facility that is still running in WA state. One patient's percocets were stolen, and replaced with a similar looking sleep med. Like, they literally peeled back the bubble pack, and scotch taped the new med it. It almost killed the patient. The med admin said she refused to investigate, because she was the queen of the castle there. (Direct quote) and later I found out from the accountant she routinely pocketed cash from the patients. We had state called on us every other week, and the coverups were massive. I had a patient die, due to a mismanaged broken hip with a fall that had been ignored for 48 hours. I was asked to re-write charts for days back, and when I refused, she started dogging my every step.
I quite, and handed proof to state, but nothing happened. You know why? The oversight agencies are understaffed and incompetent. One investigator told me we were getting better, but it was because the admin was getting better at covering up.
These locked psych units are run under boarding home licenses at best in my state. Anyone can open one up, and run them. They used to be Alzheimer's homes, but now they put anyone with a psych disorder in there. Dangerous for the elderly alzheimer's patients, and not the care the actual psychic patient need.
I could wax on angrily about this for days. It's why I left the profession.