Neither of my parents (70+) can handle smart phones. They get computers, TVs and other personal electronics just fine, but iOS and Android are both basically unusable for them. Both OSes have too many distractions and too many interaction choices, so the phone is always doing something unexpected and confusing. I've occasionally talked them through doing a hangouts call on a computer and they've loved seeing their grandkids on the video, but the smartphone interface has kept them from doing regular video calls. However, my father figured out how to turn off my TV and turn on lights in about 5 minutes, without being taught, using my Echo Dot.

It's not about not "wanting to touch anything" - the voice interface is slower and less flexible than a visual interface in a lot of ways, but it's also more consistent and easier to memorize key interactions.