What exactly do you mean by No-ICO projects? Give an example so that people understand what you are asking. Projects have more control if they hold funding through ICO. So in that way it gives scammer chance to set a trap since there is no third party to look over it.
I think hes talking about projects that give a way free tokens on bounty and airdrops.. but the truth is.. they must have made some forth of private investments .. else the project is definitely a scam