"Modeled" is the key point here. If one accepts the premise that modeling is close enough to reality that the differences aren't meaningful to be worth measurin

"Modeled" is the key point here. If one accepts the premise that modeling is close enough to reality that the differences aren't meaningful to be worth measuring with a full census count, then the change to census collection won't seem problematic. If one rejects that premise, it follows that the difference between the statistical modeling and the reality of a full census count might be significant enough to be worth measuring. That "difference" is a chunk of people who might not fit the expectations of the modeling, and it would be entirely expected that the ones who would benefit more from the model's expectations compared to the full census count would be the ones who are in favor of using the modeling.