Its high injury rate is mostly in beginners who get thrown in the deep end immediately. Having people who have hardly touched a weight in their lives suddenly doing Olympic lifts is about as dumb as it gets. Same deal with the volume and intensity of exercise for complete beginners, which is why they managed to create Rhabdo issues (rather difficult to do with even the slightest common sense).
If you lose weight too fast, you do tend to gain it back, it also fucks up your hormones.
Fasting may somewhat mitigate that.
Besides tons of other health benefits, it's also a good way of losing the gut. Only way you can spot reduce (besides drinking 6+ cups of green tea daily for little effect) bc it increases blood circulation in belly.