The moral fortitude is really a telling-on-yourself one
They rate it as a deficit of mind that we take moral choices, even when no-one is around to observe them. So this tells you they only do the moral thing for _clout_, rather than doing it because they've decided that's what's _right_.
The whole toxic "virtue signalling" dialog makes complete sense in this light. They cannot conceive that people do the right thing to their personal disadvantage for any other reason.