As I’ve often said, i do believe that most colleges, like nearly all of them are need blind in admissions, in general. Most colleges are not all that selective anyways. They have certain set criteria, and you are accepted if you meet them until they are full. Simple as that.
But I think that most of the discussion about need blind admissions arises about the relatively few selective , really highly selective schools where the app is scrutinized more carefully. A lot of holistic factors valued by such schools do involve SES and money is very much plays a role here.
Many AOs have outright said that they view candidates within the context of their opportunities and background. SES plays a role in this.