You know that how (that he knew in advance)?
Think about what you are claiming.
You are claiming that Lindell had no intention of paying the $5 million, as he knew IN ADVANCE that the packet captures were not available or were so limited in quantity that a judgement could not be rendered by cyber experts who attended the Symposium.
Think about what your assertion says about Mike Lindell. That he deceived people to attend the Symposium? I don’t believe that was his motive or plan - to have people attend knowing IN ADVANCE that the packet captures were not available. It’s unfortunate that apparently you do.
There’s not much more to write about if you’re suggesting the motives/actions decided in advance by Lindell. As you write, we’ll see how the legal activities go.
Good luck.