I just can’t believe you could wear a flowy floral print summer dress and be considered a dependable guy by everyone. Some cultures put such an high effort to preserve their old ways that I can’t see that going away in 100 years, or even 300 years. The rest of us unfortunately have to play by their rules and taboos.
What makes you think that a global crisis would reduce humanity to tribes and clans? Isn’t it more likely that desperate times result in something more like a global government and more systematic enslavement of humans? How could the owning class ever pass on the opportunity of not having to work and instead utilize their workers as efficiently as possible?