People are using iPad OS features on their iPhones

I wish the iPad went back to being more iOS-like: something like multiple Safari windows, each with their own collection of tabs, is something I wish I could disable (both for myself, and for some of the seniors I'm tech support for).

I have iDevices because I want simplicity and single-task-ness; I have Macs for multi-tasking.

If Apple needs to satisfy both single- and multi-tasking iDevices users, there should be some kind of mode toggle.