lol no.
if anything the quality of altcoins has declined hard over the past 2-3 years. specially ever since the ICOs became a thing in this market, everyone kept creating shitcoins and published them reducing the quality of new projects more and more.
that dude you are quoting is exaggerating though. unfortunately altcoins aren't going to die that easily. they will continue to get pumped and dumped for a couple of more years.