polkit authorization dialogue does not show action ID and message may be ambiguous
polkit authorization dialogue shows only message from the action without any way to see more details, in the first place the action ID itself. The message may be ambiguous. E.g. the same message "Authentication is required to mount the filesystem" is used in four different UDisks2 actions. So user has no real way to find out what action is requested.
Compare this with KDE dialogue that has Advance button to display request details including action ID.