Sorry if this is a really low-level question, but I have recently been diving into Jira training and have been struggling to get my head around this since the new issue view was released, even with the support documentation.
The Jira admin creates the screens and maps them to operations (i.e., create, view, edit). Now with the issue view function, project admins can just re-arrange or hide fields when an issue is viewed or edited.
Doesn't that seem to negate the work the Jira admin did to set the screens for the view or edit operations? What is the point of having view or edit screens then? The only thing I can think of is that it the Jira admin just controls the fields that can be present on the screen, but allow for the project admins more control to make changes relevant to their project, which would be useful if the screen is shared across projects. But if that is the case, why are there still separate screens for view and edit operators and not just one screen for a single view/edit operator?

Thanks for any insight!