I think the obsession with text comes down to two factors: conflating binary data with closed standards and poor tooling support. Text implies a baseline level of acceptable mediocrity for both. Consider a CSV file will millions of base64 encoded columns and no column labels. That would really not be any friendlier than a binary file with a openly documented format and suitable editing tool, e.g. sqlite.
Maybe a lack of fundamental technical skills is another culprit, but binary files really aren't that scary.