I think they are doing good work but in Actual that information is pending that you listen , many Rumours are coming in these days with cryptourrency ads ban by Google soon , but in actual they are not going to ban all the cryptocurrency ads , they will not promote ICOs , trading and investment projects ads only and before to advertise any site about cryptourrency related , they will double check if site is guinine or not .
And also here we can see that at one side Facebook is saying that they are banning ICOs ads but I don't think that they are doing Because I am seeing Daily about a particular ICO that is running in my timeline of Facebook .
So don't think it is in negative but we should consider it as a good thing for us in this field of cryptourrency .