It is very good that only the best projects will remain. This is a market, so only those projects that are needed and really useful to people survive on it.
Now the cryptocurrency has risen again, although most likely this growth is temporary. Cryptocurrency is a promising technology and in the future it will grow in price.
Cryptocurrency growth is not temporary. The bitcoin prices may pump or dump but in the long run the prices will always rise. If you compare both Altcoin and bitcoin, then bitcoin is more safer investment than the altcoins. According to my experience, more than 50% of the investment should be in bitcoins.