Saying that 99% of ICOs are scam is false. To run a campain, that has been well thought through you don't need an actual budget.
I'm not going to get into the semantics of what the true exact percentage of ICOs are scams, but by scam I mean any ICO that hasn't delivered what it promised and investors got little to nothing for their money, which is the vast majority of them whether it is much less than 99% of them or not. Can you really name more than a handful of successful ICOs that delivered on whatever product it was they were selling? Most of them are either scams from the get-go or they fail because it's some half assed attempt and they haven't thought it through properly, but it doesn't matter because they have your money anyway. They're just cash grabs at the end of the day and they might as well try because they have nothing at all to lose. If these people were serious about their business then they would just seek funding elsewhere or through the proper channels, but because ICOs are unregulated and are filled with greedy get rich quick schemesters they're prime for abuse and people are all too quick to throw their money at them.
And that's what I'm suggesting, that Facebook campaigns should be more efficient
But more efficient by how? And again, they don't care. They pay people just to get their name out there as fast as possible. They're throwing shit at walls and hoping that some of it sticks (which it inevitably does). They can't really be any more efficient than that because they don't have the time, money or expertise to do so. They just do whatever they can with their fantasy budget and so far that includes getting people to spam their name around for their made up tokens on social medias regardless of whether it's actually reaching the people in the most efficient way.
Far too biased. Examples:
"Many dollars are used by narcos, Dollars are bad"
"Some criminals use planes, planes should be banned"
Truth - People get into investing without any knowledge and then they blame the ICO, the teams, and the moon if necessary.
Truth - You lost your money because you don't have a hint about business, venture capital or investment analysis and you trusted the wrong people.
Truth - Had you invested 1000 USD in Ethereum on ICO you would be a millionaire now.
Note: The rate of success in ICOs is higher or at least similar than in Seed Investment or Venture Capital investment.
Stop blaming ICOs, start learning, become a bit more knowledgeable and then, invest.
@OP
At the moment, you should be more concerned about Facebook banning any kind of ICO promotion. Get another train before that.