In other words, if Airbnb is more like Craigslist (which is in essence what the court is saying) then cities cannot do things like demand that Airbnb give them private data on its users, or be expected to police listings on its site. . Which was what courts in the US said about Craigslist, when some "issues" arose on Craigslist, and some individuals tried to hold Craigslist responsible for what third parties posted on its site. Courts said no to that.
I wonder if this will have any relevance to the US or other nations.