All joking aside that's one of my filters for any hiring, and whether or not I'll work with someone. Someone who doesn't read, or hasn't read recently (tech, econ, whatever), I find is then missing all sorts of other things that make it a bad experience.
There has got to be such a poor correlation between reading and being a good hire, I'm shocked you'd admit to seriously using such an awful filter for hiring. Hiring people that are most like you in appearance, philosophy, mannerisms, hobbies is a TERRIBLE way to hire.
Reading books is overrated. I don't read books, but read a tonne of papers and magazines.
I bet I'm much more in tune with current tech and econ, that someone that reads books released 5-10 years ago,
I'm legitimately curious what books you'd recommend as tech reading? I'm sure it's out there, but outside of reference docs/books, I'm not sure I've really read much of any books that were directly relevant to my job from a technical perspective.
I've read plenty of articles/post-mortems, watched tech-talks, and read docs for new tools and languages, but I've had job applications specifically ask about the last technical book I've read and I've never known what they thought I should have been reading...
Talking to a friend recently I realized the last book-book I read was Developer Hegemony, which heavily subscribes (as do I) to Rao's concept of the corporation as an entity pathological by nature...maybe not the best thing to allude to in a job interview.