What the title says. Sure, it’s gentle on the environment, but it doesn’t remove soap scum, grease, grime etc anywhere nearly as effective as other products. I also doubt its efficiency as an antibacterial compared to say alcohol or most detergents.
There, I’ve said it.
I remember cleaning algae growth from a steep driveway using vinegar and bicarbonate. It did the job, but I had to spend a lot- and I mean kilos, just to clear away a fraction of the driveway. When I ran out I just poured boiling water on the concrete and it turned out to be just as effective though. That and mold from porous surfaces are probably the only two cases in which I find vinegar to be more effective than other methods.