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i'm confused on the gulls issue

My understanding of the gull, eagle, osprey eating fishgut pile issue is this: By fisherman leaving remains for these birds (and the occasional bear, weasel,otter etc.) we are changing their natural behavior and likely turning these species into beggars. Think parking lot at Wrigley Field. Feeding the animals in the park is not a good thing especially if it happens over and over and over. It has the end result of habituating animals to people. Same argument can be made for keeping your food pack from bears.
It took me awhile to get comfortable with the idea of sinking the carcasses but it does make some sense. I normally clean fish well away from camps and on the ride back to camp let the remains go in a very deep area.
Alternatively, I believe the USF is recommending burying remains far back in the woods.