Coming from a fan of the blog/newsletter, and with all due respect for publishing negative results and long-form writing about money as an aesthetic as much as a journalistic/educational endeavor: This would have really benefited from a "tl;dr: I was wrong; that one bank branch really has a teller window on the second floor". Still a worthwhile read if you enjoy the genre, but a small part of me wants my lunch break…
You can put theses in the third paragraph but you can't force everyone to actually read them.
After reading the article, sure, I can see that that's what was implied, but I can only say that it wasn't clear enough for me. I still enjoyed it for what it is, but I think I could have enjoyed it more if primed differently.