One of the main problems I have with Rob is that he has studiously avoided saying if or when his strategies fail. Five thousand posts, and you can't pull it out of him.
As a counterpoint, I can state unequivocally that I would cease betting straight plays on sports if one had to lay 6/5 as opposed to 11/10 (or 108/100, which is the bulk of my plays). The difference in those ratios basically eliminates any edge I have.
Rob will never say at what point he will fail. He claims to win no matter what, which is just absurd. He knows it's absurd. That's why he doesn't ever address it.