Interesting discussion. I'll chuck in my usual comment that dumping everything into one box and calling it T2 diabetes tends to confuse the issue. I keep coming back to the idea that there should be, to start with, two sub groups. IRT2 -T2 due to insulin resistance and IIT2 - T2 due to insulin insufficiency.
The idea that losing weight and then eating any old diet that maintains that weight loss works well for those with IRT2 caused by excess fat around the body. Keep the weight down, a good idea for all sorts of reasons, and the diabetes is no longer a problem no matter what you eat and that is something that can be called remission.
When it comes to IIT2 things are a bit different. In that case, there is a limit to the amount of glucose the system can deal with and any old diet is not going to work. If you do not limit carb intake when your body weight is OK then your blood glucose will rise whilst your weight stays the same. To me that is not remission, it is best described as control.
Personally I consider myself in the second category. BMI fine, HbA1c well below diagnosis level but I reckon a slice of flapjack would give me a double figure spike and readjusting my diet to double the carb intake without a calorie boost would soon put me over the diagnosis level without any weight increase. It's a guess, and would need a trial to confirm, but it is one experiment I am not going to do.
One of the things I find most frustrating is that once T1 is ruled out, no effort is made to identify the underlying reason for high blood glucose for any individual. Casting the runes seems to be the order of the day and how you get on has more to do with the luck of the rune caster than objective science. You also get analysis heavily influenced by opinion and prejudice, and that may have something to do with the origins of this discussion.