I briefly owned the light duty squat stand pictured. Used it as a secondary rack briefly. Definitely wouldn’t recommend unless you lifting just the bar. I did squat 3 plates out of it but the re rack was very sketch.
I have used these a bit back in my commercial training days when I was working with a personal trainer. The are ok and do what they are supposed to do but make sure heh are locked into place or you will bust your ass