“Supertasters are more sensitive to a wide range of oral stimuli including the bitter taste of caffeine and quinine, the sweet taste of sucrose and saccharin, and to the oral burn of capsaicin.
So many other factors come into play when talking about whether supertasters prefer a certain food or not. I’ve met at least a few supertasters that love spicy foods. Some cultures and ethnicities cook much spicier foods than others. I definitely think that supertasters can get used to spicy foods even with their increased sensitivity.