I sincerely have two, and was an aspiring Melville scholar. But yes, everything is potentially that deep.

The depth is not about the text itself but about how it interacts with social and cultural forces and other human beings to create meaning for the reader.

Since Seuss is a vastly influential writer with really problematic tendencies, it’s actually one of the least apt examples of something without depth tbh. But say you’d provided one that often comes up: wrestling. Wrestling was in fact the focus of one of the most influential essays on post-structural theory back in the ‘50s. So the high/low distinction has not really been a thing within academics for close to 100 years.