That is not a useful comparison.
First, as an aside, your point above is that social norms set rules for fashion, and I certainly agree. That does not make the rules sensible of course and, as Montaigne wrote, that we have a negative emotional reaction to someone who defies our cultural customs is not to say that we are being reasonable. We must try to step back from ourselves and our affinity for mindless conformity to our personal norms and determine whether the norm itself is arbitrary or based in reason. Preferring one set of clothes over another, unless the choice affects survivability in some way (wearing a parka at the equator) is entirely arbitrary.
Second, and the main point, who defines the norm here? There were 50 women dressed that way according to the article. This certainly is a case similar to a preppy at a goth rock concert, except Joe was the preppy and the crowd around him was in pajamas. So the real analogy here is a preppy at a goth show, telling the goths that they are slovenly and need to impress him personally when they make their apparel selections (he claims otherwise, but do you think he'd be okay if they wore wrinkled clothes? or clothes that were garishly colored? or god forbid stained?). If large numbers make for social normalcy, and they do, these women were appropriately attired.
You know what? Not that long ago, tuxedos were considered inappropriate for formal occasions. They were invented to be "semi-formal." To this very day, "black tie" events are often still dubbed "semi-formal". Also, they were only for the evening. If you were married during the day, the tuxedo was entirely inappropriate. Standards change, railing against the change of an arbitrary standard as if it were some herald of of the deline of civilization is lunacy.
I would not be surprised if Joe did not even *own* a tailcoat, white bowtie or black silk mens' stockings. What a fucking slob that he appears in public after 6 p.m. without at least his tuxedo. Luckily for him, times have moved on, and now daytime clothes can be worn at night without offense.