in reality it is very difficult the whole altcoin market is often connected to the value of bitcoin, but I hope that sooner or later it will come to an independent market disconnected forever from bitcoin
It will never happen until altcoins can leave from the bitcoin domination. The fact that if bitcoin has already used to determine the real value of altcoin and that means if this is always happening and you can't expect the altcoin will be leaving the domination that has already created by the bitcoin.