Well, the Salomé event's narrative choices were made by Drew Wagar. He decided that players could have a hand in deciding the end of the story, whether Salomé lives or dies. He also intentionally made it much easier on the opposing side than what regular gameplay would have been, for example by advertising her location, because "business as usual" would have meant it would have been too easy for her to evade everyone. That wouldn't have made for an interesting story.
So, when the event's author intentionally said that yes, players can kill Salomé for real (as opposed to her still surviving her ship's destruction via an escape pod) and planned things so that this would be one of the two possible outcomes (I'd even argue that in practice it was almost inevitable), then players fighting for one side aren't trolling. It's certainly not "Frontier allowing the event to be sabotaged and subverted by trolls", and it's not like she was killed via cheating or exploits either.
The Jaques's jump CG is an interesting question though. On one hand, you're right, the CG was advertised as him jumping the station to Beagle Point, but then Frontier decided to have the station go elsewhere, so the global reward wasn't as originally said. On the other hand, the station getting lost, arriving at the Eol Prou nebula, and sparking plenty of follow-on activity was far more interesting than if the station would have been placed at Beagle Point as the CG said.
Personally, I say that it worked out much better, so the latter has significantly outweighed the former. It made for a more interesting story and much more interesting gameplay too.