[jeffjobs4000]

Something most of the think pieces, and interviews with Michael Lewis, discount is just how geeked out on amphetamines this guy was.

[chrisweekly]

not to nitpick, but at least in my experience, "geeked out" is a strange turn of phrase here

[tanjtanjtanj]

"Geeking out" can mean to overshare or obsess about one's geeky passions but it's also used to mean someone who's tweaking on speed.

The drug-using definition predates the nerd-culture definition from what I can tell (the Urban Dictionary entry is older for one thing).