At one need-blind school’s info session, the AO said that the admissions committee knew whether you had need or not, “we just don’t have to take it into account.” So they’d never have the situation where they wanted to admit a candidate, but couldn’t afford to.
This same person made a point of telling the applicants that diversity meant admitted students might find themselves in class with a poor person, or a conservative person. My kid, who has many friends who fall into one or both of those categories, was not impressed.
IMHO for domestic (non-international) applicants, “meets full need” and an understanding of what constitutes “need” in a particular college’s eyes are more important that being need-blind.