I agree, but the right place one day is not the in the same place the next. So, who teaches THAT? I used to play a lot with another kid in college, and he'd swear he was stroking straight, when in fact he swerved the cue slightly to the side he has applying English to. Nobody taught him that, and he didn't even realize he was compensating intuitively.
Yes, before Pacquaio, Reyes, and a multitude of Miss Universes, we have a lot of Yo-Yo champions (my uncle is very proficient at it BTW.) I don't think it's unique to Filipinos, but to many Asian countries, where our parents really hammered into us to excel at whatever we do, followed by some crazy OCD. I watch a lot of Filipinos on YouTube, and they all have their unique stroke. I think everyone always looks for reasons, the "magic bullet" or "secret sauce" that elevates someone from the crowd. I just think it's more insane passion and desire, and less formula, that set these players apart.
I remember listening to one commentator observe the rather longer bridges the Filipino players make. I then see how all these low deflection shafts have become a rage. I wonder if they figured out that the longer shaft exposes more unsupported shaft, which allows it to deflect more when it strikes the cue ball, making the cue ball deflect less? I know when I need to make a long cut shot, long rail shot, where I must be accurate, I go to an open bridge and lengthen my bridge as well. I don't know why, and was never taught that, but I do it.