I think right now the only way to stop scam projects is to be personaly diligent about it, by preventing your self to be scammed and doubting suspicious things you can helf your self in stopping this scam. So just to remind people that even if there is a platform that would have safety features people that wants to scam investors will still find a way to scam them.
This is the best thing to do but even you are a diligent person, there are also instances that we were scammed. We don't know our fate and we just hoping for our wisdom. Sometimes, even the good ICO that we knew, is a big scam. A lot of people are fooled by every project existence, even I. Therefore, we cannot avoid to have scam projects here.