You keep changing your argument/position, it's hard to keep up.
Your original assertion was soda was bad. I articulated and challenged that assertion by saying that it wasn't.
You then changed your argument to say that excessive refined sugars consumption is bad, I agreed. (what about natural unrefined sugars?)
You also asserted that drinking soda is a direct correlation to being unhealthy and fat, to which I challenged your assertion by asking if the soda consumption was the only correlation when it came to being fat and unhealthy. (Spoiler alert: it isn't)
You now assert "Soda has no nutritionally redeeming qualities, is 40+ grams of sugar per can, spikes blood sugar levels significantly, and has strong connections to all sorts of negative health outcomes." I'd then argue that soda has VERY LITTLE nutritional value, not NONE, and other things such as simple carbohydrates, you know, processed foods, can also spike blood sugar levels in the same capacity. SO I'd ask if you also want to ban the poor people from buying processed foods on SNAP as it has also been proven to be unhealthy if consumed in excess?
You now say I'm stupid and I'm missing the point. I'd argue your pre-disposition on this topic is leading YOU to miss the point, which is this.
Soda, just like any other unhealthy alternative food/beverage is not bad for you if consumed in moderation along with a sensible diet.
Diet soda, however, has been linked in many scientific studies, to increase risks of cancer, heart attacks, stokes (chemically altered glucose derivatives that cause larger abrupt fluctuations of blood sugar levels).