Why does slam poetry all sound the same?

[brandontoh]

I LOVE this video, I love her work of words. I am unsure what is not to love. maybe it just isn't for you. Not all poetry is.

The problem, to state it in clearer terms, is that her spoken words sound forced and awkward. The way it is written may be sincere, but it is presented in a way that screams 'I'm speaking this way because such manner of speech is evocative!' and that makes the whole thing feel insincere. It's kind of like the boy who tries to get his crush's attention by doing things he think are endearing and ends up just being creepy. Of course, deliberately manipulating or directing an audience's emotions is not wrong. In fact it's pretty much necessary, but, the way I see it, she's doing it in such a one-note fashion it's monotonous in an annoying way. Then again, this is slam poetry, and I'm thinking theater. Or maybe this sort of oratorical style is like the work of Arnold Schoenberg; in which case I'm not trained to appreciate it.