It's odd that this exercise isn't more popular. There's less restriction on weight compared to dumbbells or kettlebells, and it's easier to do than the barbell sumo deadlift, where many struggle to maintain proper form and end up training low back harder than glutes.
This version allows you to lean forward, keep your weight on your toes, and power through with your extension. This activates the glutes better, and makes it more advantageous for athletic performance.
For this intensity technique, do the concentric part of the exercise on your own, then have your training partner push down during the negative as you resist.