Thanks for taking the time to download and check it out! We've certainly given a fair amount of thought to scenarios like this. We've decided to not be the judge nor jury on which project is or isn't a scam. We leave that to you - our users. You can review any project you wish, give it a one star, and call it a scam if that's what you believe!
Look, I've done it myself (on my personal account): https://www.cheddur.com/story/Smdj6LPqYR28CXBmz
We believe that if we start selectively filtering and censoring projects, then we put ourselves on a slippery slope. Everyone thinks someone else's project is a scam - and we don't want to be in a position where we have to pick and choose. So we just focus on the facts, and add profiles based on the facts we find on the internet. In terms of the profiles we add, our goal is simply to be factually complete.
If you look at the description for each coin or service, you'll notice that we put all of that free text in "quotes" to signify that this is language coming from the creators of the project, not us. We're very careful to not inject our own opinions into the system.
So yeah, if you think something is a scam and want to warn other users, this is exactly where you come in. By adding your reviews, we hope this will be inherently mitigated.