Not the %99 but there are many scam ICO's.. Personally i worked about 30 scam or unsuccesful project and everyday this number getting high for me. I really make researches before i join to bounty campaigns or ICO's. The high pointed ICO rewievs never helps us, it can be scam too, so we have big problem about it.. :/
Absolutely 99% is such a very significant figure when indicating to ico scam. Evidently many icos is scam and with those who meet lots of scams, wont count the times that he has got scam, so he probably tell us that 99% of ico is scam. To say frankly, this title is pretty normal in our forum, this kind of problem is also an alert which make us to be more careful before joining an ICO project.