The discussion around Square Theory highlights the nuances in language, particularly the subtleties of preposition usage in idiomatic expressions. The commentary is characterized by a mix of frustration over the use of images for quoted text, which hampers text manipulation, and an appreciation for the complexity of language. Particular focus is given to how different prepositions alter the meaning of phrases, demonstrating the intricacies of idiomatic phrases in English. Furthermore, there's an interesting technical aspect regarding type inference, which implies a deeper cognitive engagement with language processing and meaning interpretation.