"The tech folks", "text based therefore simple", suggesting anybody ever used XML and simple in one sentence, implying http would be better off binary, … how can such a small comment pack such a misleading punch.
Impressive, in a way.
The point isn't text → simple (semantics), it's text > binary (syntax).
Complexity is mostly a property of semantics, text vs binary is about the syntax used to convey those semantics. For the same semantics, text is easier to debug than binary. That's all.