Why do you think that it's not good for them at all? Does it cause any problems (puke, etc...)? Otherwise, I wouldn't worry. I figure that canids evolved to bolt down their food in a hurry, competing with the rest of the pack etc... so I think they can handle it. I did notice with my lab "Hoover" (just kidding - "Ruby") that she would suck in a lot of air if the bowl was on the floor. Trying to overcome gravity I guess! She would let these huge burps after, and once in a while she'd spew. Vet told me to raise the bowl, which I did so that she eats in a more "horizontal" way. No more problems, but she still just slurps it up - you can hear all the unchewed kibble go down there throat like a handful of gravel! I've never heard her chew a single kibble.
-Croc