I guess we’ll have to agree to disagree.
There is no disagreement here. There is just one fact. It doesn’t effect insulin levels (blood sugar). Aspertame is an old thoroughly studied sugar substitute. It’s even been studied for it’s considerable placebo effect. I’m not diabetic because I control it by diet. Aspertame is not a problem for me and those like me.
BTW , if you mean it promotes diabetes because some people stupidly think they can eat more junk if they drink diet sodas than yes it does.