No - he's just playing guys like you like a fiddle.
GB is several steps ahead of people on forums who have nothing better to do than complain about the minute little details.
The Hollywood cats don't know the difference. And GB gets to tell his grandkids he purposely inserted bullshit into a Hollywood blockbuster film.
You could be right.
There are only two possibilities here. GB is totally inept at his job and no one at QP or the record company or film makers have noticed. Or he has made decisions to put his mark on film history
Either is possible although at this stage I have a feeling you're right.
I'd be surprised if the setlist is even visible in the movie in any way. It's just something in the background, like the Scrabble game board (another fuck up).
I just read in Greg's book Queen Live, that The Prophets Song was played at the Uris Theater in NYC at the end of their Queen II tour in 1974. Surely he knows that FBG was also played during their Queen II tour, this was their time-travel tour extravaganza that can only be accomplished by opening for Mott the Hoople.