I realised after this weekend what a Guest Flow nightmare this show is.
This problem is nothing new - for years now, Fantasyland is being evacuated before the fireworks can start.
Guest Flow is pressured for the safety of guests as well as time - which explains the rather harsh tone after you having lost your tripod. In that moment, the CM just hasn't any time to care.
The worst case scenario is that they don't get all of the guests out Fantasy- & Adventureland by 23:00 ... and Disney only has a couple of minutes each night to start the fireworks. Otherwise they might get into trouble for launching them too late. The neighbours don't like that. (And considering how loud even DLP's shells can be, I don't blame them.)
And now, having Fantillusion a couple of minutes earlier is not an option either. Especially in the month of July, it's just dark enough at 22:30 to show the parade.