Not to mention he shouldn't have to in this instance. He's talking to someone who's recruiting for technical positions.

At a big-name company like this, is it really too much to ask that someone understand the basics of the technology and they're recruiting for?

I mean, I explain technical jargon all day long, sure, but I work at a trucking company. Still, my interview process certainly didn't run in to any problem like this, and had it, I can assure you I would've been met with no resistance with the given explanation...