All the altcoins you mention have use cases, there are many platforms created on the blockchain of some of the coins you mention, so they might be hard to be dead, and I don't agree with your title that altcoins are dead. It will be different if what you are showing is new tokens and coins that have no volume. Crashes are normal, we've seen them time and time again. The current crash, is temporary, it may be necessary to distinguish between whether to die and not being able to touch ATH anymore. If it is related to ATH, there is a possibility that altcoins are difficult to get to ATH, and I have experienced this in several altcoins such as MUE, XVG, SC and others, but they still exist despite crashing from ATH 2017 and not hitting old ATH till today.