I understand the rules. I'm simply playing devil's advocate and speaking on principle. And in that context, I read a lot of stupid opinions daily all over the internet. So what I'm saying is that ridiculing a dumb opinion isn't dumb or childish, it's intellectually honest.
Let's say someone has the opinion "White people are better (however you want to define better) than black people" this is clearly not true and I use it as an example because it naturally inspires a "That's stupid" reaction. You CAN simply argue it down with the science and whatnot of human genetics, but at the end of the day an opinion like that doesn't deserve that kind of attention. It's sufficient to simply ridicule it's holder.