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.
Oh, you are very correct maybe 90% or so. There are so many project in the Crypto world that are there just to entain the dev and take money from investors. Once understand this, we are going to be very smart about every of our decisions to invest in n cryptocurrency.
We want to make money but we are not ready to do research and learn how and why many projects fails. Once we understand the way many of these projects are launched and the reason for that, we are going to be smart.