Some problems:

1. "Rhetoric moves minds." Well, what do you make of this? Is using rhetoric the exploitation of rhetoric a dark art? Why not?

2. "(I won't try to write everything well. Sometimes I should just crank things out. To be honest, I didn't spend much time optimizing this post.)"

A questionable, temporizing stance. First, if you want to improve your writing, you should write everything well. Poor or mediocre writing practices bad habits. Second, language is tightly integrated with thought: you can't perfect an idea without perfecting its expression. Shitty writing risks shitty cognition.