At best maybe some people could take it upon themselves to root out scams and things which look shady, trying to investigate as deeply as they can into a project, trawl code, look at who commits and what else they have committed, etc, and report their findings. But if someone is inclined to do that, aren't they doing that already? Maybe some users are doing that here to some degree, I know there are youtubers talking about upcoming ICOs to some extent (usually just jumping on a hype train but not always), maybe there are specialised websites and blogs that try to deal with this.
How about you try to consume as much third party media about ICOs as you can stomach, filter out what you don't find trustworthy, and start following those you do. Don't trust just the first party account of an ICO, research into prospective ICOs yourself, and take into account what the third parties you trust say.