At the risk of adding fuel to a rather useless philosophical argument (I'm in the mood to sh*t stir):
Solas, while there may be nothing new under the sun, there are still gaps in knowledge that exist. All those people you mention use what works, it does not necessarily mean that they've explored every possibility, it just means they found their niche and refined their processes probably better than any individual could. And anyway, everything they know once started as someone's "secret" as well.
Secondly, until you sit in front of the OP's screen and determine for yourself whether what they have is indeed NOT a secret, who are you to say what they have? How do you know the OP didn't grow their account from $2 to $2 000 000 in 3 days? Just because they haven't announced it on the internet, doesn't mean it hasn't happened. In fact, I've read numerous articles and forum posts that suggest that the most profitable systems are in fact not posted on the net and are known to their creators, both institutional and retail/private (people like you, me and the OP).
So, I'm glad you're a cynic, we need people like you when evaluating these things, because you always make us consider the "snake oil" option and make sure we cover our bases before we decide on whether to get onto a bandwagon or not, but, the OP is not trying to punt a system on us for $x a pop, they are just having a bit of a moral dilemma and would appreciate some sound advice as to how to resolve the situation - not get a critique on the philosophical accuracy of their claims. Tell you what, the second this OP posts a link to their "secret" system and tries to punt it to us, I'll be the first to throw an egg at them - because once it's on the net, it's not a secret any more (by definition). Til then, be part of the solution or hold your peace. I'm rather enjoying the discussion because it's helping me with my situation, and I'd rather not have the thread sullied by fruitless detours