Not all ICO but you can easily say if the project is scam under the ICO program and this is why scammers are also trying to do a project under IEO and DeFi because this is the new trend now. We have to understand how the scammer works and take our necessary precaution before investing into a project,
ICO programs or their whitepapers aren't mean to say they're legit some of the time even those strong projects and has strongest way to success almost end up pulling the rug, same as this DeFi and IEO. What I want to emphasize is most of the projects do tend to fail it's on the investors end to be responsible on where they put their hard-earned monies.
if you are doubt with the project you can easily ask here if the project is legit or not, don't rush things to invest on new project whether its ICO, IEO, DEFI you have to analyze it.
It's not that this forum could provide you of all the answers to all of your questions since not all crypto projects are in here but yeah we have an extensive helpful members here that might give us an idea of a certain project. My advice is always DYOR, responsible investing and always take the risks.