Personal opinion: In fact, some ingredients don't have to be processed with a knife to taste better.

Such as asparagus (asparagus is called asparagus! When processing asparagus, if you don't use a knife and gently grasp the two ends with your hands, the asparagus will break from the fragile place and automatically be divided into fresh and tender parts and mature parts, which is better than one size fits all, because the growth of each asparagus is different.

Tearing cabbage by hand is probably the same principle. Because the cabbage will crack along the naturally growing texture when torn by hand, it will taste better.