It's a valid point, but at the end of the day my family wanted something that "just works" and they look to me for guidance on hardware so when they were ready, iOS it is. I think Google misunderstood the critical importance of owning a high quality user experience for video calls on Android devices.
Hangouts used to just work, especially for non-technical users, now it's a complete mess, as on some old devices it can't even be uninstalled.