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 but if you attending some meetings and conferences in crypto sphere you may know how to find good ICOs. First of all you must look at the team behind the project and then their backed money, roadmap, financial abilities and etc.