In relation to today's earlier posts, the following may help concretize and clarify the nature of the argument. It picks up on the pub discussion about whether you or I would refuse to work as a guard in a concentration camp.
The "concentration camp guard" argument is usually framed as a matter of principles and courage;
First; whether you or I would recognize the moral principles we currently uphold despite living in a society that propagated the opposite; and
Secondly whether we would then have the courage to resist coercive social pressure and refuse to do something that we regarded as evil.
Leaving-aside the observation that Of Course the person raising the "concentration camp guard" argument would go along with social majority opinion, and would not resist even the mildest of social coercion...
But would instead enthusiastically embrace and pursue a new career, in what would probably be re-framed as "public-protection and offender-rehabilitation".
(This, because such is what that kind of person (i.e. people who raise moral dilemma questions of the "concentration camp guard" type) invariably actually does. (e.g. as was/is seen in every Litmus Test issue, but especially the Birdemic-Peck business of 2020.)
But leaving-aside such practical and behavioural considerations, and acknowledging that extremely few people can (or perhaps should) resist extreme social coercion; especially when, as usual, these include sanctions against family and dependents...
The proper question would Not link recognition of true moral values with the capacity to act upon them.
By linking principles to the need for courageous action - all that we do is to ensure people will modify their principles in order to accommodate the strength of their moral courage.
As St Paul bitterly complained; there will always be dissonance between a Man's moral principles and his moral behaviour. That is inescapable; because the nature of human beings and mortal life on earth. But it is wicked to seek consistency by adjusting our principles to the reality of our actions.
What can and should be required of a moral person is simply that he recognize and affirm true principles; that he acknowledge what is evil, and inwardly reject it.
That recognition, acknowledgement, inner-rejection is what is necessary; and that is what is always possible. (This is what Christians term repentance.)
So; no matter what their own behaviour, or career choices, or social compulsions may be; people should always be able to know that (for instance) concentration camps are evil, and that personally profiting from such an evil is wrong.