I find it hard to believe that bad literary technique could elicit a sneer. Stilted dialog might result in, at most, bemused indifference or perhaps sadness at witnessing a failure. I'd bet you don't sneer at flat-earthers because they don't threaten your worldview. A sneer is reserved for much greater transgressions and you are afraid to admit that Rand's works, as art, presents a worldview that clashes with your own.