It certainly is. If ICOs really provide a solution to an existing problem, they will definitely bring high returns in the future. In my opinion, it makes much more sense than daily trades because you don't have to follow a coin every day that you research and study and find reasonable.
Agreed, so many icos have been proven that if these can become reliable projects and more than 80% coins in the top 100 CMC were coming from the icos. people were abandoning this but they didn't know how potential the ico right now.
Binance, ethereum, DOT and almost all of the smartcontract tokens were coming from the icos. It seems like that people started to forget about that while icos were still creating more and more new legit project.
Legit icos can be used as a long term hodl like binance.