Indeed, in general if the price of Bitcoin rises, the price of Altcoin will also rise. But if you hold an Altcoin you will be easier to control loss, compared to Bitcoin. Alt graph depends on BTC graph.
when the king rises, alts will only have one option which will be kneel
the part which you alts will rise is no correct, actually the usd equivalent of their value will increase which is not much important for us, as we are crypto users, not fiat lovers
but when the king rises fully, it will allow alts to stand and only then the real alts (not those shitscoins) can stand in front of their king
thats the time we do call AltSeason ( the dream of many crypto users with shitcoin bags
)