In a broad sense of 'taste', yes. I noticed a strong correlation between the taste preferences of heavier people for different bakery sweets (patisserie, I do not know if that is a thing in the US) and their varying caloric load. It is not a conscious thing, they just tell me they like the taste of them more.

Yes. That’s why they buy the sweeter food when given the option…

Maybe, just maybe, it is about the sugar cravings which sugar does cause (and more sugar does cause more), and not just a matter of taste.