Good Reasons For Hoaxing

But didn't NASA have good reasons for faking the Apollo missions?   What about the Russians?

Absolutely.  America was desperate to land on the moon before the USSR, and J.F. Kennedy had made it's NASA's responsibility to do so within a decade.   The embarrassment if they had failed would have been considerable.  You have to remember that the main driving force behind the Apollo missions was political, not scientific or military.   It was a question of putting the commies in their place.

But, having said all that, none of this is proof that they did fake them.   And you can be sure that if they were faked, the USSR would have made sure everyone knew about it.   They would have been able to tell better than anyone if the missions were faked.