Yeah, it definitely seems like we've returned to pop as a primarily singles medium. People who criticize today's pop for it's vapidity are usually correct, but they're also missing the point of what the object of the game is - it's not to create a memorable album, it's to create a single that will stick in the ear and empty the wallet. Albums are besides the point (or should be!) for many of these acts. It's ear candy, pure and simple.
I do think, though, that the producers of singles "back in the day" put as much thought, effort, and consideration into the crafting of a single as today's producers/artists do into an album. That's why so many of those "golden oldies" still shine - they're perfectly crafted miniatures. Plus, if you've had the "pleasure" of buying any singles-era rock/pop albums, you'll see that the albums, more often than not, consisted of the single(s) and a bunch of auxillary filler. The singles were generally well-crafted songs and productions, and the filler, uh.... wasn't.
It's funny how stuff like this comes full circle. 20th century American opular music was always based on individual songs, from the days of sheet music to the advent of 78s, on into the era of 45s. Rock (as well as Country) was very late in adopting albums as a serious medium relative to other musics, probably because the mindset of the artists and the industry both was still in "song" mode - you sold the song, pure and simple. The album thing is something else entirely, even when there's hit singles involved. Different mindset, different set of creative skills, etc. Relative to the "big picture", the album era might well be percieved as an abberation rather than the norm. Now, with the concept of "music on the go", the i-Pod has become many peoples' personal jukebox, and we're right back to the 78 era, only in digital form.
And the beat goes on...