Exactly. The problem with this article and idea being so open-ended is that people can literally say that their definition of god is whatever the fuck they want. If you believe that god is your cat, i can't exactly tell you that your cat doesn't exist, can I?
I didn't expect such a sensationalist headline from newsweek, but the whole article is pointless. If I tell you there's no god, you cannot then "move the goalposts" and say your definition of god is something else entirely. We're talking about a standardized definition that takes into account the beliefs of the vast majority of people who have faith.
Whether one person feels that god is in their cup of coffee, or lampshade, or the happy feeling they get when they whistle a jaunty tune, or witnessing birth, or whatever the fuck, is completely irrelevant. That's what Newsweek have done here. Sam Harris doesn't believe in god. He accepts that some aspects of the universe, including ones we don't yet understand, may fall into SOME people's definition of what god means to THEM. Big fucking deal, it's meaningless. I accept that rationale, too, but it doesn't mean I believe in god.