As I wrote earlier, the Soviet boxing school is very prone to standardization in the development of technical actions. If you remember, it was in this that Soviet specialists helped the Cubans during the formation of their amateur boxing school. Therefore, Lucas, yes, this is indeed one of the standard elements. Soviet boxing school = standard base for all + individualization (selection) based on this base. Each novice boxer studies side-steps, but the fighter decides whether or not to use them in bouts, based on individual preferences or personal style. It's the basic/main movement style in soviet school, called "chelnok".