I think the best form of marketing is word of mouth, if there is a good project then they don't need to shout it from the rooftops, people will realize the potential and they'll tell others about it, soon it will spiral and the project will be very popular.
It is very good, and word of mouth is the best marketing. And if the technology itself has a very good market, then marketing is not the most important. The same is true, but now I see that many ICO projects have no investment value. Perhaps ICO investment is over.