^ Nope it's not like telling a weed dealer anything. Your analogy falls down there due to the fact drugs are not art; a drug dealer is providing a very specific thing for a price. It's a product.
Eminem's CDs may come at a price but his thoughts are not products. His art should be organic, and not catering to what you, I or anybody but himself wants to hear. Then: whoever likes it, likes it.
Plus, you're trying to imply that introspective content is the 'strong shit'? I can write introspection deeper than I've ever heard in a million rap songs combined. Writing your feelings and thoughts is not very hard, for somebody who can write; somebody who is self-aware and somebody who analyzes themselves. However, creating true originality takes more than plain practice.
You THINK I want 'guns and violence' and blah blah, but you don't actually understand Eminem as an artist. It's actually you who can't handle the 'strong' shit', you don't get it. You need the weak, predictable shit. A weed high is predictable, you want weed. An acid trip is unpredictable; deep, eye-opening and beautiful; I want some acid. You're too simple to want the acid.