From the comment in the article it sounds like they are trying to offload the cost/ effort of verifying listings to their customers as well: " But he said the process would involve asking users whether the information in certain listings turned out to be accurate " So when he says AirBNB is going to verify every listing, he doesn't actually mean they are paying people to do it...
It also doesn't mean you're safe to use airbnb. If you're the first person to try a given scam listing you'll get scammed. And then airbnb will de-list it, after the fact. And then the scammer will create a new listing presumably to scam the next person.
As a side note, when I travel and I actually want to interact with my host, I will rent a room in an occupied house and I always pick a newly listed space. since the host is not sick of hosting yet, they are much more friendly. If you go to a place that has been operating for years, they will not want to show you around or hang out. New hosts are much more likely to be social.