I tried it for about 4 weeks, I didn’t really progress reps wise at all on some of the movements and I think that’s because the reps rangers were higher than my concentration (if that makes sense).
If you can focus during long rep sets I’d try it but I just found I got bored due to the quantity.
Edit: like you though I’ve got a bad back and I workout from home. For my main movements I like weighted lunges, reverse lunges, front squats (not going too low though) and RDL (with a DB) and glute bridges etc.
What I find overall (from having a bad back) is that some TUT squat or lunge sets give that burn with minimal weight.