My wife does an impeccable job of managing smartphones and tablet computers for many older relatives (and some younger tech-challenged ones too, I suppose) and they're also all on Apple gear.
But it's not because the users understand Apple stuff better. They can learn the core workflows they use on any device, and they have most of the important parts written down anyway.
The primary reason she put them on Apple was so that they would have mostly the same problems and she could learn from one and apply to the others. I suppose this matters more the more relatives you manage devices for. But as you say, the range of opportunities one can get with Androids or PCs is much wider – which translates to a wider range of problems also.
But it's not because the users understand Apple stuff better. They can learn the core workflows they use on any device, and they have most of the important parts written down anyway.
The primary reason she put them on Apple was so that they would have mostly the same problems and she could learn from one and apply to the others. I suppose this matters more the more relatives you manage devices for. But as you say, the range of opportunities one can get with Androids or PCs is much wider – which translates to a wider range of problems also.