I don’t doubt a word of this.
When my husband and I took care of wills and such, we found out that a spouse in the US does not necessarily have any say in treatment in the case of the patient being unable to respond verbally. We had to have legal documents giving each other that right.
My Dad recently passed away in February. He had a subdural hematoma after a fall. I have three brothers and six sisters. Most of us showed up at the hospital and were there around the clock. Fortunately, the staff was good and accommodating to our crowd, but the more family and friends who show up to help the less they can do if they have a mind to.