While I understand it's "character building" and "worldbuilding," to me, starting out part of the episode with the sexual topics it was tackling made me view SD as a "sexualized" show. It explains upon Dandy's sexual preferences in depth and his understanding of why ass is better than boobs. It also goes onto explain Boobies, which in all honesty was really stupid in my eyes. Both of these are instances justified in that they are indeed character building and worldbuilding. It's true. However, while it's justified why it's happening, the fact that it's happening as the viewer's first impression already gives me the idea that this is what the show is about. Granted, this wasn't the entire first episode and the second half is about alien hunting. So if I boil it down to really really simple ideas, which is a bad idea but for the sake of this discussion I will, I got two messages: 1.) it's about a perverted guy and the show is perverted; 2.) it's about alien hunting.
Hopefully that answers your question. If that doesn't then point out where so I can better clarify.