What's the Point?

Oof. This gee-I-never-thought-of-it-like-that-before, it-could-always-be-worse, yike-what-if-I-were-a-waitress-seamstress plot twist will only be worth it if A. it turns out Thelma and the diner were a figment of Margo's imagination all along or B. after this conversation, Margo busts out of the dining twirling around and singing "New Attitude" by Patti LaBelle.