If you look at the issue globally, the forum has become very empty since 2017-18 and the number of projects has decreased, but now another story of the cryptocurrency pump and the forum is reviving again.
It looks like you are wrong in this matter, indeed in 2018 there were many scam projects, but the forum did not become empty because of that, and one more thing that in 2017 there were also many successful projects, even though some of them became scams the following year, so that needs to be outlined The bottom line is that forums never die from things like this.