It seems that because of the excessive advertising power before, most people have reported or complained? Indeed 2016-2017, they accept a very large number of advertisements. Perhaps people's awareness of encryption was not that widespread. But I don't think this will be permanent. As you said, now is the era of the digital economy, and only the accepted talents can hardly see the future.
ICO advertising may be strictly managed in the near future, which also promotes the development of the market! Isn't it?
Interesting update on this as far as timing of my post yesterday. As of today, I have seen ICO ads getting disapproved by Google. I'm rather surprised by this. I really didn't expect them to take action against cryptocurrencies. I still believe, like you, that this will not be a permanent ban. It will be interesting to see how all of this plays out.