There's no body that is going to blame the social media for the ignorance and greed of anyone that has fall victim to scammers. The truth is that "nothing is perfect," Like @EarnOnVictor has said. Anything that has advantage also has its disadvantage, the social media have been used to promote so many altcoin project and I am quite sure that through some social media platform, many people have tried to talk their friends into investing in Bitcoin via their chats on those social account.
There are bad people everywhere. There are even more on social media. We can't ignore the good things being done there just because there are bad people somewhere. Social media is an important tool for the development of cryptocurrency and its spread to more people. Many projects have been introduced and continue to be introduced on social media. Projects reach a large number of people through social media.
One of the biggest roles of social media today is that it makes it easier and faster to reach people. Sometimes the way to access information is through social media. Sometimes the way to present information is through social media.