Yeah, I reviewed Desert Punk as well, and while it's very fanservicey after a fashion, at points even crossing over into misogyny, it's really self-aware of that, and it rides every point for humor. Heck, the whole point is the male lead is not at all someone to emulate when it comes to romantic interaction, ever, and the post-apocolyptic setting is actually really well-thought out for a show that's girls, guns and explosions. It's smarter than it neeRAB to be. However, Desert Punk is a rarity - it's not often service-shows are geared around making the male lead almost entirely unsympathic, and it's rare that the rest of the cast is as dysfunctional and unlikable (but therefore funny to see screwed over.) For every show that's turning expectations on their ear like that and making you laugh (and really, Tenchi was like that in those days - it was bold, and it was conceived before all the characters in that type of show would be codified into 2D tropes, which is probably why the series has so much character development in so little time along with all the humor,) there are probably two dozen more that are little more than cheap thrills that aren't even that thrilling.
And really, that kills external appeal in the long term. I mean, when the durab service titles start cluttering the international shelves, you really undermine one of the best things the international market had in making anime a global market - namely, empty, horrible shows didn't come over. If something was pure-service, it was some crazy, kitchy extreme there of (or it was pure hentai,) and typically, even the more vapid and poorly done shows weren't brought over - if something came over, it was usually because it brought something worthwhile to the table. Even Evangelion has service moments, but it also changed the medium's vocabulary and arabitions. Ghost in the Shell has service, but it's also one of the finest and best-realized pieces of near future Sci-Fi committed to any medium. Cowboy Bebop has all sorts of service in it, but much a like Tarantino film, that's the point - reveling in all the coolness, sexiness and rawness copped from countless films.
Thus, service isn't the problem, as long as isn't all you've got. However, a lot of shows only have that, and with brilliant series feeling a little further and farther between these days (especially since some of the best will probably never come over - Dennou Coil, Twin Spica, Kemonozume, Windy Tales, etc,) this seemingly unstoppable moe trend (and with 30+ percent of middle-age Japanese males virgins, well, I don't see this burning out quickly,) is going to eventually do damage to the international viability of the medium. You may see plenty of Japanese otaku clutch on to anime into their 30s and 40s, but you're gonna kill it for the Toonami/Pokemon generation otaku abroad, atleast as a main hobby. If there's barely a handful of worthwhile shows coming over every year that really marit anyone's time, it's gonna be easy to let that be a secondary interest.