100% untrue
its going to depend on the animal. No locale, morph, color, or anything like that has an effect on personality.
advise I will give you tho, get one that already feeding perfect if your not ready to deal with a picky eater. and buy one thats captive born, less chance for problems.
I had a suspected aru/biak and she was the tamest snake I owned to date, also have a merauke and he is pretty tame also, just not as social as the aru/biak. but their locale had nothing to do with how tame they were, just depends on the snake.