You can say it's made up all you like, but there's quite a bit of detail in this article.
www.foxsports.com.au/afl/next-fremantle-...97170589bbc7af403220
From the article, "Sumich began well but made his position clear on the role of the club’s next CEO, which was not shared by the panel." and "It’s understood Sumich’s main concern – which was communicated to the panel – revolved around the CEO role. He politely asked to see a shortlist of candidates in the hope he would be on the same wavelength as the man or woman who eventually wins the role."
Good thing the panel didn't share this, otherwise we'd all know by now.
Personally, I highly doubt that any leaks come from FFC or the panel.
(sarcastically, unless of course, it was the note-taker, who also knew about McPharlin being a close confidant of Ross Lyon which concerned Sumich, and which was also mentioned in the article.)