Personally I feel like it would be less undignified and infantilising to have a machine take care of my basic bodily functions than a human being. There's no feeling of judgement or being shamed in front of someone else, and the machine could even restore a feeling of autonomy since it would feel like you're using a tool instead of being helplessly reliant on another person's help.

More likely than not, a human would be remote controlling it, at least at times. So, they're there, you just can't see them seeing you.

I think this is more of a cultural problem. Aging is a normal part of life.