Its true because its a fact that most altcoins are dependent on Bitcoins price. However if the Bitcoins prices improve so the altcoin does. Lets understand tha hate but the market in general is still struggling to recover from what it had experience in 2017.
Bitcoin prices are improving altcoin prices for Bitcoin pairs will decline, that's how the market does it !, it's not good in my opinion, I prefer the price of Bitcoin being accumulated, it can make altcoin go up