I don't know whether it's a good thing that the fates of the altcoins is tied to bitcoin, so to speak. Obviously they are profiting from the increased trust people are placing into cryptocurrencies thanks to bitcoin, but I hope that doesn't mean that the price of altcoins will fall as well, if bitcoin declines for some reason in the future.
Like it or not I think most alt-coins are tied to the price of Bitcoin. if Bitcoin were to crash back down to $5k or under, you would see the alt-coin prices collapse as well. Right now Bitcoin is kinda of like the ocean tide that raise or sinks all the smaller cyptocurrency "boats" out there.