Actually, this is a great fallacy kibble-feeders like to fool themselves into believing.
The truth is adding "some water" to kibble does not solve any problem.
You merely add "not enough" water to a nutritionally-devalued brown pellet ... and, even with "some water" added, in the end the dog will still need to drink a ton more than a raw-fed dog ... and he will not be able to enjoy the same nutrition profile as he would have been able to enjoy, had those same ingredients simply been fed raw to begin with.
Jack