The variation of the band pull-apart method has you doing regular reps, but slower than usual. This is more for muscle-building than improving weak spots or improving the role of the back in the bench press.
Depending on your objective, you can vary the approach. It's practically impossible to overdo pull-aparts, so use them often.
The reason you're not doing one of these squats is because it's hard. The reason you're not doing the other is because you probably never thought about it. Check it out.