While i agree that the solutions are limited and our hands are tied in dealing with such projects, It's difficult to pit the blame on the people who invest don't you think? Individually yes, lack of due diligence should most definitely be blamed. But from a community point of view, to make sure that adoption of Bitcoin is fully realised - it is counterproductive to blame individuals for not being smart enough. I believe this approach is not inclusive enough which is primarily what the Bitcoin ecosystem intends to do. A community led project verification mechanism could and should be there to raise trust in the vision I believe.