I’m not trying to move the goalposts because I think of my iPad as just a larger iPhone. To me they’re the same.
It’s such an odd dynamic because I see so many families sharing an iPad which isn’t multi-user but then treating laptops as personal.
It would be very awkward, even if you had multiple user accounts. How do you deal with things like notifications on the lock screen for messages, which can be very personal. There is so much personal stuff on my iPad, it would be like sharing a toothbrush. Sure, you could do it, but why would you ever want to ?
Computers have become deeply personal devices, to the point that having to keep personal stuff off them would negate a lot of their utility. Is there still a point to having shared computers ? Do people still do that ? Even my parents, who are in their late 60's and care little about technology both have their own personal laptops.
Sharing a computer doesn't mean keeping personal information off of it, it just means you want a device that respects your personal information and keeps it private (non-readable by other user accounts) by default.
The iPhone was mentioned once, to connect it’s not possible on either iPhone or iPad. This is about the iPad, a completely different class of device, where it makes sense it would be shared, at least within a family, and has nothing to do with personal pizzas.
It'a small point here, but the way you moved the goal post so your analogy applied more really bothered me.