The reason for this is that humanity both have greed and also emotions that has burdened us for decades, we have been working for others and hated our work for so long that we want to get out but financially we can't so the hate towards our work, hate towards poverty and hate towards lack of freedom grows more and more which causes us to maybe a bit greedy but in reality just let go and be free.
This means even though we may fear something could be a scam, we end up being blind to bad sides of it because we want it to be real so badly in order to finally be free, and that is where we end up not really realizing the shortfalls of the projects.