I am not sure on this because I think I have stumbled upon some ICO and cryptocurrency-related ads in Google just days ago. I am not sure though whether it is directly in Google or some through sites which I browsed through Google. But I think it is very much possible that Google did not really fully ban ICO and crytpocurrency-related ads. Just like Twitter. Until now, I can see a lot of ICOs being promoted through twitter. And even Facebook.
Yes I definitely get quite a lot ads from Google ads about crypto and ICO and other stuffs mostly the ads are about
bunny token,ice rock mining and miner one this are the most common ads I get from google ads I think they are filtering the ICO and crypto related ads because they also want to advertise a safe ICO also for the people safety and take them away from scam ICO.
Same here I still receive lots of ICO ads from google ads I think they are only filtering it and choosing what ICO need to show