[13rules]

Saying that a particular view is stupid without offering any additional information or another viewpoint is... well...

This isn't 7th grade — come up with another word that really means what you want to say. There are a lot of ways to disagree with someone and/or an idea without the derogatory language.

[illuminate]

I don't think it was intended to be persuasive, but I don't believe it was meant as a targeted insult either.