[leaflets2]

> can make the author of it feel smart for a second

Since this behavior is so common, apparently it works, evolutionary:

It makes others think your are smart, for a long while

And not much effort required, on your part. So, a great opportunity?

And the more popular the project you start bashing is, the smarter you'll seem? Corollary: If one builds something great, one will get dissed by some.