From The rise and fall of rationality in language 📝

All in all, our results suggest that over the past decades, there has been a marked shift in public interest from the collective to the individual, and from rationality toward emotion.

While this is based on “millions of books covering the period from 1850 to 2019 represented in Google nGram data” and the reversal starts in 1980s, I bet the 2007 acceleration owes a big thanks to the iPhone and social media.