Re: "staring at little rectangles in their hands"
Yes, the videophone thing... yes it kind of works, but when you have parents in their 80s... less so.
the reality of video call in our household is that I always get my parents in portrait mode, regardless of which way they or I have our devices. I usually only see the top of one of their heads, and even that shakes around, fall over. The sound doesn't work. Usually we spend the initial 10 mins trying to get the call to work, preferably on tablet, but that only works occasionally.
Discovering a suitable application is usually painful: in the early days I tried them with more professional apps like BlueJeans and webex, but everyone has a range of different social situations and each has its own platform. Nobody likes a multiude of apps, which inevitably resulted in another 10 minutes of "how do you log in?".
Webex managed to shoot themselves in the foot at one point by releasing a new, even more complicated version which had a separate app and a different login process and dammit, let's just use Whatsapp.