Interesting system, If it worked though all casinos would change their system of how the roulette table works.
At the same time, it might also be a trap set. I don’t think there is any strategy that can ever be given freely when it comes to casino, casino is a game where you walk in with so much money and come out with little money because of its difficulty in playing, so I would wonder why a strategy would be given online if it were to work without demanding for anything in return.
Casino is strictly a game of luck although there are things I know that some players can do to boost their chances of winning in a casino game but I don’t think it is a strategy like this.