[...]Good luck with that!

Again, I'm unsure how you, with your experience and history around the forum, can even for a moment believe the nonsense coming from him.
The answer is quite simple: curiosity to see if you can make money quickly with a secret strategy. This applies to old hands as well as complete newbies.
I also read through OP's post, but would have been happier to see references to AI predictions for the games or something similar, because I can definitely see potential here, especially in the preparation of bets, which you have to do anyway to have a win rate above that of pure luck.
But at least OP didn't ask for money to promote his idea, so I don't see anything fishy here.
Ops have nothing to show man, he is just blabbing with the whole thing, how possible is that for someone to have a working strategy to winning sport betting, he even went as far as claiming that his strategy have been working for over 10 years now a claim that I view as false claims.
Despite that the ops did not ask for fees, he still have not been on the good side of the law, since his statement can entice others into believing in false actions and gullible sense of acceptance of unprofessional conducts such as sure bet or sport betting strategies.