I think it’s a combination of personality style (men of a certain generation who have lived a life of being in charge of themselves, and probably others) and the fear of losing control as they age and actually are losing control.
It sounds atrocious, but one thing that has worked well for me to function within this big picture and not beat my head against the wall in frustration, as we dealt with in laws who, in our humble opinion, would have been better off in AL, was that actually they knew what they wanted. They wanted to live at home and die at home. They remained in their home until the last 6-12 months and, honestly, in hind sight, it was the right choice. He would have loved many aspects of being the BMOC at the AL, but they could not have shared a suite, they required different levels of care, and that was important to him. She would have hated being in the SNF wing.
DH pushed them for years to move from their home of decades, but you know, it was right for them to remain as long as they could and if he had injured himself or died doing any of the large number of risky things he did, that would have been a better way to go than the last year in care homes, it truly would have been better.
I think we kids want to keep the folks safe, but I think they crave their independence as much as possible and I am now convinced to give in moreso, and also to not feel guilty if they are hurt or even die sooner due to THEIR choices. I know, I know, it sounds bad, but seniors really seem to want to have control of their lives.
Of course, if there is dementia or even post-op or mid-illness inability to decide, that is totally different.
ML, your Dad is trying to be the boss of his life, y’all can let him make his choice, but that really only works if the entire team lets him suffer the effects of his choices and he seems too physically fragile to make a good choice right now. Perhaps later, when he is himself again, then he could make a valid choice, but he should know everyone is not going to come running to save him from himself.
And, yes, you should stand up against his financial power plays, it’s, again, him trying to find a way to control again and it is so unfair when the oldsters play financial games with caregiving.