Most of the speculators before and even now are saying that if Bitcoin goes up, then altcoins goes up as well and good projects perform well. How true are these speculations if there are different technologies or plans for each cryptocurrency? And the fact that bitcoin is not even the first cryptocurrency.
Well, the speculation that the price of altcoin goes up when the price of bitcoin goes up is correct. although sometimes in the altcoin-BTC pair the price does not go up, but because the price of bitcoin is rising, the price of altcoin will also go up. it can be seen things that happened in 2017, or the increase in the price of bitcoin in 2019. the dominant bitcoin increase gives the effect of price increases on altcoin, although it is not as good as 2017. But, this does not happen to all altcoins.