I think it’s about what you see the word reversal as meaning. So this is a frequently seen discussion on semantics imo.
Medically it means achieving normal blood glucose levels without medication. There is variation even within that. Some say below 48mmol, others below 42 (prediabetic). Some allow metformin, most don’t. Some need it maintained for a period of time before declaring it.
Reversing, to me, means turning it back the other way. So if your insulin resistance (blood glucose etc) has reduced it has reversed. Whether it makes it all the way back to normal is another thing.
It certainly doesn’t mean the same as “cured” in my book which seems to be the definition some think it means and dispute