As I also seen the e-mail, I thought i'd post here as well. Been off and on trading for 15 years, last year and a half full time. Found Scotts stuff a couple years ago, and have also spoken to him.
I forget where I found him, I think on Quora, by chance. Being very well versed in how to avoid scammers in all areas of life, he passed my sniff tests.
Both his Price Action Masterclass and Systems Trading Masterclass were excellent purchases, and I have no regrets at all, and I still recommend them. I rewatched most videos many times over, and overall it improved my technical execution. It allowed me to get balls deep into designing systems, and there is little material that is as straightforward as his, and covers all the major bases (Although it's weak in analysis, everything manual, he actually calculates MFE by hand - I have to respect someone who can handle drudge work like that)
This "Holy Grail" system however, is something else. It should have never been sold as is, because to mirror others who have bought it, it's incomplete. It was mentioned on the earliest sales if it could be automated, and the answer was "yes".
The answer my friends is a resounding NO. This system is completely useless in the hands of a beginner. He also mentioned giving away the "Complete rules" - when they are far FAR from complete. There is a ton of nuance (important nuance) that is not disclosed, and there is still ongoing changes to the rules. I feel these rules should be shared for those who purchased the system, especially at full price.
I orignally bought it because I had already started developing my own system, and was looking for pieces and parts to steal to make mine better. It served me, but I still feel as if this wasn't a good purchase.
Scott when you read this, I would recommend you do that, including whatever these new rules like "Minimum viable R". You sold and are selling an incomplete system as complete, and that's where you are losing the trust. Make it right, and you can work this out.