I think social media campaign in the like of Facebook is still operating. Facebook just don't allow those unwanted crypto adds because of the fact that there are lots of scam ICOs today that would eventually poison the minds of the people that would literally stain the reputation of bitcoin and cryptos.
But isn't it that Facebook has made a sudden U-turn and change their decision earlier? Now they are allowing crypto ads but it has to go to a lot of processes now before they are allowed to used Facebook as a means to promote their project. At least legitimate project nows has a avenue so facebook bounty campaigns will still continue.