OK, for the sake of accuracy, let's say that Alex Jones is an "unreliable" source, which is basically saying the same thing as the other description of "not reliable".

unreliable
adj 1: liable to be erroneous or misleading; "an undependable
generalization" [syn: undependable]
2: not to be trusted [syn: undependable]
3: not worthy of reliance or trust; "in the early 1950s
computers were large and expensive and unreliable"; "an
undependable assistant" [syn: undependable] [ant: reliable,
reliable]
4: dangerously unstable and unpredictable; "treacherous winding
roads"; "an unreliable trestle" [syn: treacherous]
5: lacking a sense of responsibility

http://dictionary.reference.com/browse/unreliable

Sounds like AG and his ilk to me.