Well this is what the insightful Tone Vays claims...
He claims that ETH, DASH, shit 99.5% of all the ALTS are scams and the only coin that will survive is Bitcoin.
So l guess we should all sell our Alts now!
Not all altcoins are scam because we can see on the market a lot of coins that are still being bought or sold for trading. If all altcoins scam maybe bitcoin will not be famous now because crypto currency is not only bitcoin.