It's not just turkeys, it's any hydrocarbon waste material (organic scraps plus other hydrocarbons like plastic). I believe the plant design allows for up to 500 barrels of oil to be produced, at full capacity. With some 19-20 million barrels a day usage, obviously a single plant would be insufficient, but hundreds of these plants around the country could eventually produce maybe 10-20% off that total, perhaps more.
Depolymerization works. The question is economic. If we have to find 10 million barrels of oil per day sometime in the next decade, can we do it? Peak easy says no, not by a long shot.