If you are running a high blood sugar you feel terribly thirsty, I can remember just before diagnosis I was so thirsty I felt like nicking pop off the shop shelves to quench my thirst, but to drink sugary drinks other than to remedy a Hypo is share madness !
Whilst i fully agree to your comment on fizzy pops, the craving symptoms you describe are only one of many such indicators for diabetes. I am a T2D myself, and I NEVER had this symptom, even when running bgls in the 30's (last year). Nor did I pee a lot. I was having no indications at all when I had a chance bgl test at a diabetes roadshow simply because my mother had the disease, so I wanted to check in case i was genetic. My first bgl was over 20 mmol/l, and i was referred to GP. The only symptom I had was a bit of weight loss, but I was still at a reasonable BMI. Since DX I do not get the sweets cravings, or the sugary drinks binges, or the nightime dashes to the loo. The only time I have had these is when I had a UTI bought on by Forxiga (which is apparently par for the course on both counts)
So I was ignorant of my own diabetes and felt right as rain when DX'ed. 10 years later, I have finally taken steps to take control of my condition, and am happy to report some success in my own personal battle, but I too was in denial for a long while.