I have been on the other side of that wall. I used to be an EMS professional, and I once had to carry out an involuntary psych order on an individual who would not eat, simply because an assisted living home would not provide them with meals that were in line with their (very easy and mainstream) religious beliefs. As a result, this person didn't eat, not willing to break their faith for such a ridiculous thing, and they were sent to a hospital as though they were suicidal. They asked to climb into the ambulance on their own, but we were worried about them falling due to days without food, so they happily laid out on our stretcher and let us carry them in.
We chatted on the way up. They told me they didn't want to die, they just figured fasting out of protest would be a way to get a meal they wouldn't need to break their morals to eat. Their religion did provide a stipulation for eating outside of the guidelines during times of hardship or famine, but my patient didn't believe that the situation qualified because there was no real reason for it outside of elder care admin bullshit. And frankly, they were right. We took them to a hospital that was able to accommodate them and they got fed. Still had to complete a state mandated psych hold even with zero intention of dying. It isn't a hard process in most states to get a forced hold on somebody; in the state that story took place in, you don't even have to put it in writing, just have someone on scene explain to a judge over the phone what's happening, and they can give verbal permission for police officers to take them into custody on a psych hold.
Just giving some context for why what happened did. If this were a thing, people would be doing it all the time. I ultimately believe that everyone who genuinely wants to die in the best circumstances we can give them should be allowed to, and our current system is broken and bad. But the above was the easiest psych call of my time in EMS by a country mile, and I can see how our system is supposed to be set up to prioritize those who aren't in a rational mindset or thinking things through. Not accusing Pento of that, but I just kinda wanted to walk through my experience of having been on the other side.