Re: "provide emotional support"
You're demonstrating a very common complete lack of understanding both of the current state of robotics and of the needs of elderly humans. For the record then, yes indeed robots even if not humanoid can provide great emotional support for several reasons. Firstly they can be designed specifically for that purpose and yes, we humans do know how to do that. It can involve everything from body language to gestures, physical contact (such as a hand on the shoulder or over the other's hand, a stroke of the head, a hug...), and appropriate language in appropriate voice modes.
Secondly many elderly people are not prejudiced against robotic assistance in the way that many younger people are, simply because the elderly are often more open-minded.
Thirdly something you're not realising is that there are considerable numbers of situations in which an elderly person actually _prefers_ non-human assistance because they worry about their frail old body being _judged_ by a human while they know full well that a machine will not do that, _cannot_ do that.
When I was interviewing people in their eighties and nineties, and a couple of centenarians, about this very topic—robotic help—they said they would prefer a non-human to assist them in anything involving their nakedness or vulnerability, such as dressing, bathing and toiletting, for this very reason.
And lastly robots will never respond defensively or with anger when a dementia sufferer spits or urinates on them or slaps, punches or kicks them, as many do. Humans are not so willing to take such abuse.
So please leave your prejudices out of this topic. If you're lucky enough to live long then you'll need help yourself one day.