My goal with the GSA framework is so that you can look at a move, compare it to the model, and decide if it's something that would benefit your game. Typically, the squat and rotate feeling is a good feeling for some elite junior golfers. They typically have too much lateral slide and early lower body lift. The idea of squat and rotate can help those golfers get the right amount of translation. It's not a very good move for golfers who have more of an upper-body spin, or if they have too steep arm motions in transition. In general, I think having good hands and club control is helpful before trying some type of pivot drill like this.
If you're curious about any new move, I would apply the following logic:
1 - Look at your own swing on video and identify areas that don't look to match the model.
2 - Imagine what kind of reaction would happen if you try the new move. If it makes sense, try it in some drills and then video your swing.
3 - Evaluate if the new move ACTUALLY moves you closer to your model.