I was first introduced to Pop! Sriracha Popcorn when I was in the midst of a cold and could barely taste a thing. The intense taste of sriracha cut through everything though, and the crunchiness of the popcorn only added to it being the best thing I had eaten since I started getting sick.
Even after I had regained all my taste buds and sense of smell, I couldn't stop eating the snack even though I'm usually not a big fan of spicy stuff. I checked the list of ingredients and noticed that sugar was included. Of course! I don't know how it works, but I know you can add sugar to a dish if it's too spicy to make it more palatable. I bet the sugar was doing the same thing here while also making it super addictive, like a buttery, spicy, garlicky kettle corn.
Since I'm kind of a wimp in terms of spiciness, I only used 2 teaspoons of sriracha in this recipe, but if really like things spicy, I imagine that doubling that amount or more might work better for you. At a certain point, though, you might have too much liquid, which would make the popcorn soggy, so you'd be better off making some sriracha salt and sprinkling that on.