It's kind of funny that Osaka is the one used in that picture since she's the only character who I don't remember any significant fanservice of in Azumanga.>>936
Not sure what you mean by that but you probably just don't remember the dozen trash shows with cardboard cutout girls that aired every season in the years after Love Hina. I'm also not really sure what your timeline is since the left Osaka looks pretty Strike Witchy and that's nearly fifteen years old now, from back during the heyday or panty and jiggle harems.
I think fanservice these days has shifted more to a model of showcasing overall attractive characters to try to engage the viewer both down there and up top, rather than just outright titillation, though series that stick to the old model like the seasonal monmusu ecchi shows seem to be pretty popular for doing so. The animation in general has also improved a lot since the early days of digital anime and the trends in character design and animation style have changed so I wouldn't expect to see the same sort of fanservice anyways.
Either way though this is still just a slice of the overall anime market we're talking about. There's never been any uniformity across the medium so the whole thread is kind of moot.