Did you read the rest of the post? I'm saying that mathetmatically those two things are completely irreconcilable.
I'm not saying the phone will be bad, just that it is impossible for the both the phone and tablet to conform to the form factor of a typical phone/tablet that is out now.
Phones and tablets come in hundreds of different screen sizes. Ever see this map?
https://crossbrowsertesting.com/blog/mobile-devices/android-...
There isn't a "typical" shape / size for a phone / tablet.
You can say an iPhone screen size when duplicated into 2 side by side does not equal an iPad screen size, landscape or portrait and I'd completely agree with you. But to say a new class of device won't have it's screen sizes and needs to conform to screen sizes of the past... that just doesn't make sense. No one conforms to screen sizes; past, present, or future.
The article specifically says that other aspect ratios are feasible, and even suggests one.
The future of the form-factor of foldable tech is by no means locked in stone.
From a quick google search to https://www.cnet.com/topics/tablets/best-tablets/large-table..., I see no such thing.
Tablets typically are 4:3, which would result in a phone being 3:2 which would be 25% shorter on 18:9 phones, and 15% shorter on 16:9 phones, which is a reasonable departure from the norm, and ultimately means neither the phone nor the tablet are well set up for watching films/TV.
I think you may be seeing a different argument than OP was making.
But you did though. We barely have a prototype to look at (short of the demo on stage) let alone put a technology like that in the hands of Google or Apple engineers.
There was no need for a smart phone, until there was. There was no need for a tablet, until there was. Smart watch, smart speaker, and so on.
Version 1 is always crap and most (all) know that? Give it a couple iterations, a little trial and error and you'll probably get your aspect ratio or tiny bezels.