After reading the article it doesn't seem an attempt to take down Christianity so much as an attempt to make money off of its more gullible adherents by selling them books and getting royalties from Discovery Channel specials. Nope, folks like these don't want to take down Christianity - to do so wouldn't be profitable for them.
What's ironic is that that Chrisitans who protest against this sort of junk archaeology seem not to be too bothered by junk archaeology by Christian apologists out to 'prove' the historiocity of biblical events.