The time has been given to the altcoins to set things in order, get use case, good exchanges, technology development and liquidity. If after this bear market some coins dont get most of these they are likely to be delisted of most on the big exchanges which could lead to their death. De-listing will be a type of death issue certificate as time passes and this signal should determine your holdings. If your coin had not been listed at any time maybe because of the market, the team competence can be assuring factor for holding or think otherwise.