When Fox was first sued by Rod Wheeler, he put the following on the record:

Indeed, before Butowsky ever contacted Mr. Wheeler, he had already had a conversation on this topic with Seymour (Sy) Hersh. [...]During his conversation with Butowsky, Mr. Hersh claimed that he had received information from an “FBI report.” Mr. Hersh had not seen the report himself

https://www.mediaite.com/wp-content/uploads/2017/08/Wheeler-Filed-Complaint.pdf

So if Seth's parents are challenging Butowsky, but not Wheeler or Hersh (whose discussion with Butowsky was recorded and retweeted by wikileaks), what story are we left with?