I guess it can't be helped, many ICO were turned into scam projects and investors lost their money.
Once we see something wrong in some ICO, we will say that ICO is scam which actually doesn't like that.
My suggestion is, we must take our time to do some research and then we can say it scam or legit.
that's what we have to do. because not all ICO scams. and I think all investors are also aware of that, maybe they are becoming more careful in ICO investment because there are too many scams. but if there is a good project, I think investors will also consider their investment.