I think that's too few, at least there must be more than 80% of coins that will die, because only a few will survive.
and most new projects will just make the same mistakes, as the ones already done.
create a new project promoting, then the fomo ends and the project dies.
It is good when we understand that all projects can not survive in the market. We need to go for the ones we feel like they would make us good profits in the market and staying too long after when we have gotten some reasonable prodits would never give us a good end if we have that kind of habits. There are some projects that are always ready to launch and after that, they would never stay too long in the market. All investment has there own risk to take.