I 100% support this as an experienced MH practitioner.
I haven't worked on acute wards or PICUs for a decade but when I did, the majority of staff time was taken up trying to prevent people who wanted to die, from dying.
People who had been receiving treatment for years or decades. Sometimes 1:1 care (or 2:1) for years which is degrading and humiliating for the the individual to have someone watch them bathe, urinate, defecate, and insert and remove tampons.
I have many, many stories of how inventive people can be if they really want to die or self-harm. Which is why many psychiatric wards will not allow the obvious things like belts but also underwired bras, scrunchies, hair grips and staples in magazines. One unit I worked in which had new carpets had a patient ball up the excess fluff you get on a new carpet and shove it down her throat which resulted in her being rescuitated more than once.
Other patients who were several years into 1:1 nursing would on a sunny day, sit in the garden while on psychiatric medication that is photosensitive so they'd severely burn. So staff had to balance not letting someone outside with restraining and dragging someone inside. Shit for everyone involved.
And attempt to eat themselves to death ordering takeaways to the ward. Which it is extremely difficult for staff to block due to the rights of the individual.
It's very odd to me and always has been, that a lot of people seem to think we should treat MH problems 'the same as physical health problems' in terms of sympathy and understanding but don't consider them to be the same as physical health problems in terms of sometimes there being no more medical (psychiatric) treatment available.
I felt in those days, that I was abusive. Trying desperately to stop someone from killing themselves when it was their right to do so and all available treatment hadn't worked.