Nope. I absolutely showed that this is narrative is true: "The narrative (especially among losers, obviously) @ UFC 1 was that them Gracies had an [unfair] advantage since they supposedly did all they could to 'hide' their 'new' skill set."
No one besides Royce in the early UFCs knew anything about BJJ, and that was by design. To say anything else is a lie. Some Brazilians (like Marco Ruas) knew, but they weren't invited for a reason. It's also possible that Oleg Takarov (who won a similar Russian tournament the same year), Gokor or others could have been invited, but they weren't...again by design.
/thread. No TLDR needed!