
You don't necessarily need to do higher reps to build muscle, you can do lower reps if that's your fancy. The most important reps are the last few you complete in a set as it's when you're the closest to or at muscular failure. By cutting down the amount of reps you do, you not only reduce your overall fatigue, but make the process of building muscle on a calorie deficit a lot easier. Hip thrusts, Rdls, cable glute kickbacks, and the hip abduction machine are more than enough to grow the glutes.
I agree with your take but you left out some of the nuance to low reps high intensity training. By doing a lower number of reps you reduce the volume in one workout in order to lower fatigue so you can increase workout frequency. If you go down the route of lower rep higher intensity sets you should be hitting that muscle group multiple times per week