From a mathematical standpoint the problem with Martingale Strategy is that eventually you will reach a losing streak long enough to wipe out all your funds. And it is not a question of IF but rather
WHEN.
So
the strategy does not work (unless you have infinite funding). I don't know why people think they can outsmart mathematics.
Most people do not understand math, while they also have a narcissistic view about the world, in which if they need something then everyone and everything should be changed so they can get their way.
So if they need martingale to work, then in their minds it should, even if the math says otherwise, but as we know no one can really do this, and instead of adjusting their views and realize their mistake, they push even harder to get their desired result, which leads them to a scenario in which even if they were to eventually realize the truth, the only way for them to recover their money is to keep taking absurd risks and hope for the best.