The comparison with IPAs is apt. For me an IPA is really only suitable when it balances the flavors of some other food. But, let's be honest. People aren't getting IPAs for the hops. They're getting IPAs for the higher ABV. And, while I love blue cheese I never sit down and just eat it alone like I could disappear a block of aged cheddar. Blue cheese is always better when it balances the flavors of other foods like bacon, dates, cured meats, buffalo wings, cauliflower, salads, etc.

Truffle oil on the other hand might as well be snake oil. Truffle oil is never authentic, it's just flavored oil. Just give me some damn mushrooms and if truffles aren't available find another good mushroom and stop trying to make it an oil.