TikTok's nostalgia-fueled obsession with the early 2000s

For an app primarily used by by young people, TikTok is oddly obsessed with nostalgia. Whether its obsession with childhood memories or Y2K fashion, the app is overrun with yearning for the past.

The hashtag #nostalgia has 18.9 billion views. Accounts like @nostalgia__hub, @thr0wback5, and @daily.dose.0f.nostalgia are...