1. In 2008, at its peak, Apple sold over 54 million iPods just that year alone. This accounted for around 40% of Apple's revenue. Sales of iPods didn't see a dramatic drop until 2011, when they dropped to 42 million. By 2014, sales had dropped to just slightly above 14 million.
2. If you aren't listening to the lyrics closely, then you may miss that OutKast's "Hey Ya!" is actually a sad song. According to André 3000 — who wrote the majority of it — the song was about modern-day relationships and how "a lot of people stay together for tradition," choosing to be unhappy rather than alone.
Even OutKast's official Twitter account tweeted back in 2021, about how "Hey Ya!" is actually a sad song:
OutKast/SME / Via Twitter: @Outkast