I think these are about the tiniest closers I’ve ever seen. One was obviously not enough to get the bathroom door closed, so another one was added. The door still wouldn’t close, so the closer was flipped around and mounted the opposite way. The door STILL wouldn’t close, AND the sound of the closers was horrendous! (video evidence below)
Most health codes used to inspect food service establishments require self-closing doors on restaurant bathrooms, so these doors are probably not code-compliant.