majority of altcoins are gonna get destroyed for sure, and what I mean by majority is 95% of altcoins because honestly bitcoin dictates heavily in the valuation of altcoins in general.
even the altcoins you think gonna be having promising future.
what does it mean? they will not survive or gonna die? while I support that majority thing , yet destroyed is not that close to happen because many will survive but will not grow as high as expected , meaning that many altcoin will continue to maintain their position or get lower though will continue being used by their supporters in their own way as it was being used.
Probably it will not happen,if it happens means.The market is crashed fully,the crypto currency will loss his importance among investors.It’s unexpected one from the crypto community,most of the investors in bitcoin holding for the time. Even if the crypto market was crashed, it will not happen in one days.So till that exchange your money from website,the website will give you some time.
crashing happened many times but not that low, hope that this will never happen because there are only 2 option , to be loser or purchase more for further chances.