To be honest, I tried researching for an official statement or announcement from Google about this issue of Google banning crypto related ads or ICOs, I don't think it is true and I don't think Google will let a project or business as big as this just pass by.
I heard about that but i think its a fake news. Google will not ever do that, they earn huge money because of crypto related advertisements. I think this statement came from a person who hates cryptocurrency and wants to destroy it. Still hoping this thing is not true, if Google will ban these crypto advertisements, crypto currency will face a huge problem.