Make the value of e-mail field visiable on user profile's View page

Description of the need

One on of the Backdrop websites a customer wanted to see e-mail addresses of users without taking an additional step (going to Edit tab).

Unfortunately, there was no option on /admin/config/people/manage/display/default to make the field appear on the View page, but it was fairly easy to satisfy such a requirement by implementing a custom template. However, I still wondered why such an option is not available via UI.

Proposed solution

I'm totally ok if it is by special design not to make the value of e-mail address field available on the View page, however if the community members would share my curiosity why it could not be made available, then this feature request could have a chance.