I do not think they will ban advertising ICO projects. That is a wrong move for Google. Because Cryptocurrency does not affect their companies, they even bring profits to them.
Now that the Crypto market is a very hot market, Google should take advantage of this to advertise them and make a lot of profits. I think this news will not happen.
I know not all are scammed but google can't take chances they can't promote illegal ads where people money can be lost.Maybe it can effect on market day by day companies are start banning bitcoin some countries are also contributing and banning the crypto currencies i think bitcoin has dark future.