NO POINT,
(1) That is just Western Culture making music into some "technical" art form, and that's why White People could never develop the Blues, Jazz and Rock N Roll...Because they were taught "after this chord, then this chord must follow, and when use these chords, you must use these melodies"...
It STUMPS creativity...
(2) It is more BENEFICIAL to learn how to play an instrument with or without the music theory...People in Africa and other parts of the world play BEAUTIFUL music and they don't know SHAT about "music theory"...
All they know what sounds good, and which rhythms elicits what emotions...They play by feel, and that's why the music (in my opinion) tends to be more melodic and hypnotic and even surprising than Western Music...
(3) Conclusion, Music Theory is box, don't get stuck inside of it...Make music according to feeling and rhythm, and keep it simple, that's what people LOVE...