it depends on your definition of "survival". for example do you consider an altcoin which was created a while ago and its initial price was about lets say 50,000 satoshi and all its life it continued downwards and is currently worth 0.01 satoshi a coin that "survived"? if yes then he is wrong.

if you define survival as something that not just has a price tag on it but also is improving, is being adopted, grows, offers utilities,... then you can see how 99% of the coins are simply considered already dead.