To me, the alarms sound way before that. You can change the tune of your idea if you need to persuade people, while at the same time being honest about it.
What I don't like about Hancock is that he uses Gobekli Tepe as a prop: we don't know the whole story/history about it, but he will gladfully use it to support his claims, without actually producing evidence that furthers our knowledge on what Gobekli was!
I can surely entertain the idea of lost civilizations, but that doesn't imply I validate the dishonest handling of unknowns as "evidence".
This is what pseudoscience and con men do to appear respectable.
What I don't like about Hancock is that he uses Gobekli Tepe as a prop: we don't know the whole story/history about it, but he will gladfully use it to support his claims, without actually producing evidence that furthers our knowledge on what Gobekli was!
I can surely entertain the idea of lost civilizations, but that doesn't imply I validate the dishonest handling of unknowns as "evidence".
This is what pseudoscience and con men do to appear respectable.