I feel like the 2010s are the first decade in 100 years that doesn't have a recognizable aesthetic or vibe.
Every decade since the Roaring Twenties had its own recognizable culture, visual aesthetic, music and so on. In the 2010s, the Internet allowed us to become cultural omnivores. It's good that everybody had access to whatever niche subculture they enjoy but it also meant that there was no more monoculture that we all shared.
Haha yeah. I remember the first one where it went from flat to skeuomorphic, that was OS/2 and System 6 to Windows 3 and System 7.
I just got a little fixated on the Dreamcast being representative of monoculture.