The fact that they made fun of it really means nothing. If it sounds like crap and they make fun, it has a basis in fact but if it doesn't sound bad, it just means they're too ignorant to figure out how it works and making fun of something that can't be understood is just them being like little kids, poking fun a another kid.
Next time you talk to them, after reaming a new one, just look them in the eyes and say, "You couldn't figure out how it works. How would you know if it's good, or not? ".