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?