Let's not go bickering over all of this.
Surely, in terms of whether any individual can come off insulin depends on a huge number of factors, including where they are making that decision from. It all depends on the starting point and why insulin is/was being considered/prescribed. I'm only talking T2 here.
If they were very recently diagnosed with extremely high numbers, and insulin was given to get the numbers into a safe zone, promptly, then there is probably the potential there could be some lifestyle changes that could be made to improve the individual's lot to make their insulin journey short.
If at the other end of things, the individual has been fighting, tooth and nail, to constantly keep their numbers down, eat well (thinking deep LC or keto, in this example), stay trim and limit their meds to the minimum, but still their numbers are in poor territory, they could be fighting a losing battle if their natural insulin production is dwindling away.
Of course there are several (probably hundreds) of steps between those scenario, but surely all any person can do is get themselves in the best shape they can manage, with the resources available to them.
Whilst I think I would fight against insulin with every fibre of my body, one can never be too sure when one might think enough is enough. Sometimes those, with co-morbidities in particular, are just juggling too many balls, whilst keeping their mutiple plates spinning. I can see why sometimes it is absolutely the right thing to do.
