I have been MPOA and dealing with medical issues with my parents for several years. Along with the hoops you jump through, I have also been having frank discussions with them about end of life care and what they want. One of my parents is now in Stage 4 kidney failure with uncontrolled diabetes. They made it perfectly clear many years ago that they did not want insulin or dialysis and I have honored that request. But these choices have consequences. At this point, they are eating very little, dropping a lot of weight and suffering with dementia. They are on hospice, but as soon as the "H" word was uttered, family members are wanting said parent to see a doctor. At this point, I feel it is useless because 1. It's not going to fix anything and 2. It's not what this person wanted. It's my call, as I am MPOA, but I would really like to understand the family members' reasoning. Am I being unreasonable here?
To me, it wouldn't matter what the family thinks, but I understand your concern.
You're absolutely not being unreasonable.