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.
Not in my work and study. My background is test engineering, and I found that some people of a particular genetic pre-disposition, Aspartame DOES very much affect blood sugar. The blood sugar goes up dramatically and STAYS UP no matter how much one exercises or takes insulin. It takes days for these poor people to purge the Aspartame from their system. Now, if they had raw honey - blood sugar would spike, but would ultimately go down, because there is enough PURE sugar for the body to understand and process. The synthetic sugars are causing harm to some people, and promote diabetes.