I've been skeptical about this from the beginning but I strongly think this will not be happening now. Facebook is lifting their ban only a few months after its ban partially went into effect. I believe Google thinks it is in their best interest to take ad revenue from this and has no reason to restrict advertising if Facebook is not.

Managing ads for ICOs, I have not seen any slow down or negative effect for a ban that was supposedly starting now. Any talk of this will probably quietly fade out and things will stay bau.