"Reversal doesn't exist"

I have never understood what people mean when they say this when remission clearly does, if we're talking solely in the sense of there is no one and done cure and that it can always come back then yes in that sense you're right, there is no one and done cure or treatment for it, your body was once a point it couldn't keep up, but saying you can never get rid of it is a stretch considering multiple people including ones on this subreddit have reached A1C levels at 5'7 and lower, the real treatment to a life free of diabetes after catching it is a life of healthy eating where you make unhealthy things a treat only and exercise as having some muscle mass is just as if not more important than just losing weight