I don't think so. I don't have to worry about that.
Because the profit from the ICO advertising to Google is amazing, if it is not restricted by very strict laws, then I think Google will not give up such a big profit.
Yes, as long as Crypto Currency didnt break the local law and was not probihited by local law. Google will stay to allow ICO advertising. Google will earn big money from those ads. I think there is not any logical reason to prohibit ICO Ads.
We just must be smart people. dont be fooled by Scam ICO.