Without putting too fine a point on it: Bollocks.
You can watch video of other teams and analyse their tactics in the loose, and identify their strengths at the breakdown and how you might go about countering them. You can even get the workings of their lineout calls and do your best to plan for that, or the execution of moves after the lineout or scrum has finished. It can't be done for scrummaging.
All scrums train to upset the opposition ball, and be rock steady on their own. You can take what you learned from the last time you played that bloke and his pack and that will stand you in good stead, but you need to take each and every scrum as it happens, because no two scrums are quite the same. If you're good, you'll learn everything you need to know after the first couple of engagements, and if those scrums actually complete, you'll learn more.
Most tighthead props this year have learned one thing about Benn Robinson: He's bloody hard to stop at the pointy end of either the Waratah or Wallaby pack. What they do to counter that is try to get better themselves, and I'm pretty sure they'd been training to do that in the first place.