My mom was taught Windows in 2000, mainly by me, and is very comfortable with it now. To her, an iPad is a strange UI, she can't type on it without a keyboard, it has no mouse.
Your mom may be different, but the elders in my extended family not only want to check emails they want to write emails and they want a keyboard for that, they're all touch-typists since the 1950's. Yes, they watch silly videos on YouTube and yes, they read news articles, but they're used to Windows for 15+ years and have learned enough by now to be relatively efficient and self-sufficient.
BJ
My mom has never ever been able to use any computer up until the point where I gave her an iPad, so there's the difference. She's not the only one either. After I taught her how to use the iPad with Retina Display a while back, she has actually been able to teach her other friends, who had also never used a single computer their entire lives, and who are still doing snail mail these days (seriously). They are just old school. Emails may take a while to type up on the iPad, but they are not impossible. These are elderly people. They don't type at 80WPM while not looking at the keyboard. I have actually been able to teach my mom how to use dictation lately, so I'll see if she will be using that more instead of the on-screen keyboard.
I solved the printing problem for her, in any case. Bought her an Airplay-capable printer, so whenever she needs to print out things like coupons, emails, cat photos, etc... it's super easy, and she doesn't have to plug the iPad in.
I disagree, if Apple didn't believe in it they wouldn't of put the Touch Bar in the new MacBook Pro's. I think just like anything else it's about getting use to it, give people time and they probably will. I can see the Touch Bar being added to other computers such as the iMac.
The problem is not whether Apple believes in it, it's whether the feature makes any reasonable usability sense. And as a developer myself, I can tell you straight up I cannot see a point to the Touch Bar other than adding more work for us developers, and potentially allowing us to charge our clients extra for implementing it. Yes, it's really that kind of device.
The thing with a touch screen is, and I have worked on a lot of projects involving them, is that because they can shift the controls, you force the user to constantly stare at the screen to see what they're controlling. And this applies no matter how big or small the touch screen is. This is the flaw of the Touch Bar. But I think Apple knows this, and they want it.
I think everybody is missing the point. It's not whether or not Apple believes in the Touch Bar, or whether people can "get used to it". What it really is at this point, is a "survey" for the future, when Apple will take away the trackpad and keyboard altogether, and replace them with a big touch screen. It's very obvious. If developers start adapting to the Touch Bar more, then Apple knows they can force developers to work with a big touch screen as well. If users start adapting to the Touch Bar more, then Apple knows they can push the touch screen on them as well. It's just a matter of whether the adoption is fast or slow, so that Apple can plan for the eventual inclusion of that touch screen. The slimmer keyboard with not much key travel is also a subtle hint at the fact that they'll eventually force a flat screen with no key travel at all on people. The "Apple Pencil" will eventually become another input method on that device as well.