Bitcoin domination does not make a big impact on altcoins.
Then it looks like you need to watch the markets more.
That Bitcoin seems to have declined and the Altcoins also declined.
Harder. Declined harder. There. Fixed it for you. Yes, most of the time altcoins still follows the price of bitcoin, but I think you need to check out altcoins prices in the past few months when bitcoin dropped in price. Then you'll know.