I don't think if it is still worth investing in ICO projects because 99% of them are scam and many investors are not investing anymore in ICOs, they prefer IEO and IDO but still you have to be careful when choosing a new project to invest because there are still scam projects even in IEO and IDO.
Right, even though IDO & IEO also both aren’t 100% guaranteed way to profit by investment, In that case i would like to recommend to invest on top tier Exchanges launchpad projects those can be around 10x-20x profitable most of the time. There're so many lower exchanges run shit/scam projects IEO just because of they got paid by team.