It's probably not a true story, but a good one. And he said it quite confidently!

He said he stopped being a bike messenger because the fax machine and policy changes around legal documents requiring original signatures

On the other hand, he could have just heard about the contents without reading them at the time, and later read them when they were publicized.

He wouldn't have been the first person to read them then (middle sentence).

It doesn't say the first person, it says "the first member of the public".