LOL, they asked Clint Hill who said (very nicely) that Landis’ outlandish story wouldn’t hold water. But they published it anyway. And only because it is newsworthy and will help them sell their paper. That’s all there is to it.
No. Clint Hill said what Landis is saying now conflicts with what he said in his official statements in 1963. Which is worth keeping in mind but doesn't prove that he's not telling the truth now the same way that Malcolm Perry and other witnesses changing their statements about the assassination doesn't prove that they lied before or after their statements changed.
FWIW, Hill and Landis are friends as Landis' email exchange with Hill from 2014 proves.
Might want to wait til the book is released before jumping to any further conclusions...