Improve output when a profile is considered to be contradictory

[ghost]

Feature request

The output for contradictory profiles is succinctly: The provided profile is wholly contradictory!. This doesn't support understanding why the profile is contradictory and what can/should be done to resolve the contradiction.

See #1706 as an example of a profile that looks valid (at a glance) but required some investigation to find out why it wasn't.