Justification doesn’t point to character though. It’s not a logical contradiction being pointed to as it’s perfectly possible to justify via logic and reason her actions, or most actions, given enough information and creativity.
Rather, it’s similar to the distinction between a politician who talks about ill morals of others while being immoral in his own private life. That’s not a contradiction but a character flaw. Maybe it’s not in Ayn Rand’s case, as rational self-interest is a moral virtue in her system and so long as it can be logically justified, it’s ok.
In that case my post is contrasting incompatible moral systems.