I would respectfully say you are incorrect. Al’s process doesn’t change and hasnt changed for decades. He puts in the same ridiculously work every day, with the same handicapping proceesses. He is successful and the best long term at handicapping because he takes it seriously. He does the daily grinding hard work. And we all know Al is brilliant. Complacency isn’t in Al’s DNA. And everyone who knows Big Al knows this.
Though I don't think it's appropriate to post one's own touts, I agree with your point here.
The logic of the original post seems flawed. The gist is simply "he's due" because it's improbable he can sustain an 80% win rate. I agree with that, but only because there is too much randomness in sports wagering. I don't agree that a "massive regression is on its way." Nor do I believe that "it's starting" because Big Al has already slipped to 70%.
A regression is based on an variables used in an analysis, and (more to the point) 1) the relationship between and/or among them; 2) the strength and consistency of those variables, and 3) the statistical significance of each variable. Statistical regression analysis (in my opinion) is not well suited for sports handicapping; too many influences on any variables, I don't believe that there is sufficient consistency in relying on the same variables, and none really have enough statistical significance.
Boiled down, I think gargamel's real point is sort of the converse of the "hot hand" theory. I think the theory and its converse are flawed. I agree with the point, generally, that an 80% success rate can't be sustained. But I don't agree with the cause, as the poster suggests, being a "massive regression." I think the explanation is the laws of probability.
The logic of the original poster proves too much. The original post says Big Al's picks, now, are suspect. That is more random than the picks, themselves. If nothing else, the observation, followed to the next logical step, suggests that instead of Big Al, we should instead rely on the guys who are doing poorly, because they, too, are due.
Just my opinion.