@Nihilist 007 The way that Snowden conducts himself isn't very LII-like; and although LIIs do like discussing viewpoints, overviews, systems and theory, so do many other types.
@DELL The first three of your quoted sentences do apply to LII; however, LIIs tend not to need external assurances and they can be very rational in times of uncertainty. Under high stress is when LIIs can get highly animated, chatty and wordy, which may be where Snowden finds himself.

a.k.a. I/O