I'm a massive, unrepentant nerd so I can't even imagine how this could happen! The MCU is only one of the biggest, most successful series of movies EVER!
Either way, this guy clearly didn't have a clue about any of it and was just trying to do his job by making sure the extras on set don't eat at the table that's meant for the real talent. It's a good thing he decided to be polite about it and that Tom Holland
is a pretty understanding guy!