I find the entire discussion about fanservice with relation to Space Dandy pretty boring honestly. The entire segment is obviously a Hooters gag, except it's drawn out such that it's kinda lame and forced rather than funny. At no point did I feel that the show was trying to sell anything to the audience which actually watches "fanservice anime" because that's not how you would do it at all. Complaining about the fanservice seems to me like missing the point a bit.
What's weak about the episode was that the comedy wasn't really spot on, and the pacing was pretty dreadful outside of the crazy planet of death physical antics at the end. It seemed that Watanabe was aware that he was going nowhere with his script too, because he decided to end it with one big "LOL BAD END". Clearly not the best opener for a series, but there are far more flaws to criticize in the execution than "lol fanservice".
In fact, with better writing and tighter pacing for the jokes, it would have been much clearer how insignificant the "boobies" part of the episode actually is. It just feels like it goes on forever because some of the stuff just dragged and dragged.
Watanabe should probably stick to directing, and leave the writing to more capable people who are more than willing to work with him.