Actually in crypto space there are many good projects, but unfortunately there are not many investors who are interested, so the project failed and died due to lack of support. This can happen maybe because investors are frustrated, and prefer to invest in projects that are already running and proven performance.
you are right, actually there are still some good projects. but because there is no support from investors, many good projects fail or sometimes succeed, but when they enter the exchange, the tokens die.
currently investors are very difficult to trust new projects, they prefer projects that are already running and most of investors choose coins that are registered with CMC.