Not all the altcoins will rise when altseason started only few of them will make it, majority of altcoins will die and mostly projects without use cases and working product will be eliminated which is good for the cryptomarket.
I agree that those who are for real cause will survive and make a big run once the alt season rise back. Those projects that added real value and helps
the industry to be more useful being alternative to the current system. We do have speculated and waits for alts that will continue surviving and tailing bitcoin's success.