Is it true that Nakamura never read a chess book?

This won't hyperlink since I'm posting from my phone, but copy and paste it...
https://www.facebook.com/groups/1385914858127271/permalink/1609083832477038/

In this interview, Nakamura says he read Gallagher's King's Indian book, a whole bunch of tactics books, Nimzowitsch's My System and a book on Tarrasch's games. He recommends Garry Kasparov's My Great Predecessors series of 5 books and Mark Dvoretsky's Endgame Manual. It actually sounds like Nakamura has read quite a lot of books.

Back in the late 90s, my grandpa took me to Atlanta for a tournament we both competed in. He played in the U2200 section and I in the U1600 as it was my first tournament and I was unrated.. I was a kid with high hopes. I actually did fairly well in the tourney, coming out with a rating of ~1550 - but I vividly remember playing a fellow youngster in a hard-fought game that I lost. I later saw his picture in Chess Life as the youngest NM in the US and again later as the youngest American GM, breaking Fischer's record. That youngster was Nakamura. It's an experience I'll never forget and it still amazes me to this day that I once sat across the board from this chubby kid that became such a sensation here in the US. Ah, nostalgia...
In fact I can guarantee he's read one in the past several months.
how can you prove this ?