I think you have it backwards. The sundress is overly-dressy. The shoes are designed to be looked at and to impress, rather than for comfort.
I think that sort of misrepresentation (not you specifically, the event) is what the author resenting. Read me out.
Brute utility defines romance of 'startup culture'. Humans understanding their world, and interacting with it in a straight-forward way. I'm modifying the code to do this. These effects will alter this part of our business. You're attempting to account for everything. Money has definite purposes. Your time has value measured in the sort of excitement that makes your brain burn like you were lifting weights with it.
Those conditions do not include men spending their money on jeans, and women spending self control on culturally approved foot torture. At that point the focus has moved from interacting with the business to something about social status.
Buzzwords really give things away. I'm only now learning that buzzwords are the most important part of modern established businesses. They're fucking amazing. A buzzword represents an abstract concept.
Abstract concepts come in two flavors. Those that represent something very specific/complex in concise terms, and those which represent something very vague/simple in bombastic terms. In use, they are the guardians of understanding and agreement. Secrecy and manipulation and power with publicly spoken words. A stark contrast to the liberal sharing of knowledge and honest curiosity of the startup dream.