My suggestion not to be too hasty to determine an ICO project that you believe is not necessarily 100% good, by finding out from the closest people who come and succeed, analyzing it is very important in investing in ICO at least not go into scams that have spread to everywhere, there are still many ways to invest, like buying more of today's best coins.
Yes sure, it is very relevant not to put all your coin into an ICO, since even if it is good a legit, many things can affect the value and being prudent is better in those cases.