Earlier quoted context omitted.
Cane Sugar vs high-fructose corn syrup, yes. That's the conventional wisdom. J. Kenji Lopez-Alt did a study where he concluded that people who think they like Mexican Coke more than Regular Coke simply enjoy tasting Coke out of a glass, and the perceived cane-sugar vs HFCS may just be a placebo: https://www.seriouseats.com/coke-vs-mexican-coke But YMMV. Even having read that study, I still prefer Mexican Coke.
I would love to do a blind taste test. It could also be the aluminum can. Even if a placebo, it's still true - I can't stand canned coke. I can't drink it, the taste to me is horrible.
If all your brain/tongue perceives as horrible is the taste of the aluminum can, you could always switch to buying Coke in glass bottles, which are more expensive than cans but still cheaper to buy in bulk than Mexican Cokes, and can be found at most grocery stores.
Or, if being limited to Mexican Coke means it reduces your overall soda consumption because you're only able to drink it when you're near a Home Depot, keep doing what you're doing. You'll probably be healthier for it.