Very good points.
I used to work at a job where we sold smart phones. I started at the job during a time when not everybody owned a smart phone yet.
A lot of people attempted to sell people the smart phones by going into great detail about their dual and quad processors and RAM and megabits and gigawatts and an amazing camera that has 1/3" sensor size, geo-tagging, simultaneous 4K video and 8MP image recording, touch focus, face/smile detection, HDR (photo/panorama) and supports video with 2160p@30fps, 1080p@30/60/120fps, 720p@240fps..
The average human being finds absolutely no value in any of this.
I don't even understand all of the tech stuff when it comes to smart phones, and I sold them for a living, I never bothered to learn. I simply let them use the phones, asked what it is that they want to do that would convince them to purchase a smart phone.
"I'd like to use Facebook with my phone."
"Okay, this how you do it, see how easy it is? Anything else?"
That's basically how you sold a smart phone.