It is, I just mean you can make it a part of something larger - a piece of the puzzle so to speak.
I don’t want to get too far out of my depth, but with this sort of periodization, more Western-style periodization, you work for a stretch of time, say a month or two, prioritizing certain qualities - this could be maximal strength, hypertropy, etc.
These “blocks” build upon each other. As an example, being bigger allows one to produce more force, ie be stronger. So very often you’ll see a block focused more on hypertrophy to build more muscle, and then the next block you try to use what you’ve built. This is a huge topic, and I won’t do you the disservice by trying to explain it all in a little post.
So essentially with 531 and many other western-styled systems, you spend time doing what you need to do to build-up your lifts, and then spend a little time using what you’ve built.