"How about put it right on the screen of the device after an update, where the user must hit Continue to proceed"
Because that is the wrong place to document it.
So I fill out a website feedback.
Get on the apple support app.
Moved to Messages.
Shared your documentation with them,
Showed "Continue" panel.
First line support says
"I have checked with my resources and as per the resources I need to get this escalate to our senior advisor through the call,"
Second level senior support staff sees I say I am trying to update website,
And as I have already filled out the feedback form there is nothing more for her to do.
Second visit
Get on apple support app a second time.
First level can find nothing
like your documentation in their scripts,
Neither can the second level senior advisor.
He can find no support for your documentation.
This time I say I want to address the surprise updates.
Since there is a work around, he leaves it at that.
How can apple support staff help if they do not know what the software does?
The documentation should be on apple support website.