Mathew,
The problem is not with stock or forex systems so your examples of Netflix or stock splits is not relevant. The deception is only with Futures systems because they are almost always traded with 1 lot trade sizes. Take a look at this simple hypothetical stock vs futures system which trade the SP 500. I think it will explain the problem I’m talking about. If subscribers knew the actual current risk instead of seeing only an artificially reduced risk metric (max $DD based on fractional futures) they almost certainly would not subscribe to those systems (such as Maximus Decimus):
