Sad that they're being sentenced based on the impact of the response by TfL's IT team
It would definitely come into play if TfL were suing Jubair & Flowers, but it's not really relevant in a criminal situation like this.
In any case you can't go out of your way to make the situation worse with a sort of sly understanding that because you're the victim the other person will wind up on the hook for it. They may wind up on the hook for it if you are a huge and exceptionally well connected entity and the other side is a nobody, but that's not how the system is supposed to work and it's not how it does work when the parties are on equal legal footing.
You don't get to argue that your crime wouldn't have been so bad if your victims weren't incompetent.