That sounds too good to be true ,its not easy for that to happen because for a coin or token to get to zero then no one will buy ,sell or trade ,no demand at all .
It's not so difficult either,so many coins have gone extinct,no value whatsoever,no purchases equals to zero, and with a falling market, it makes it even much more easier for that to happen.
The bitcoin generally controls what happens with the market, and now is a bad,bad time for the bitcoin,so for other alts.
Only those with a good strategy and management will be able to survive this bear market