Cannot select private/public files storage (while connected as admin)

What do you mean by you "cannot"? What actually happens as compared to what you expect?

P.S. See https://www.drupal.org/node/3156530 → for why I removed issue tags.

What do you mean by you "cannot"? What actually happens as compared to what you expect?

This is what I mean:
In admin > structure >Type of media > Video File > Manage fields > Video file field > Field Storage > Upload destination
There are 2 "radoi" buttons
- Private
- Public
It is set to Public

I would like to change to public, but I cannot. The 2 buttons are greyed.
- Is there some setting elsewhere to make them changeable again?
- Is it impossible to change this setting after some files have been uploaded?

Already discussed in this thread https://www.drupal.org/project/drupal/issues/3336188 📌 Consider making file field upload destination changeable even after data exists Active
According to this thread it seams this issue is a Drupal Core native issue
So, what can I do?