If bitcoin prices skyrocket again, then slowly the price of altcoin will also go up. Circulation like this will continue to occur in the cryptocurrency market, considering the price of altcoin always follows the development of bitcoin prices.
Agree with what you say that altcoin can not be separated from the movement of bitcoin. bitcoin seems to have bind altcoin so that all price movements depend on bitcoin. but there is also altcoin which is pretty good but not much.