Sure. Some things are near-universally understood to be subjective and personal. Preference in ice cream is one of them. Many others are less so, though; moral values, for instance. Some even less; opinions about apparently-factual matters such as whether there are any gods, for instance.

(Even food preferences -- a thing so notoriously subjective that the very word "taste" is used in other contexts to indicate something subjective and personal -- can in fact give people that same sort of sense of superiority. I think mostly for reasons tied up with social status.)