Why is it that the moment BTC starts to sway, the other coins follow suit. It would be hard for everyone to sell that much at the same time. It seems beyond just panic selling. They seemed to be directly linked. Inf-fact, BTC going down should increase and encourage altoins as they raise in value compared to BTC as it falls so why this uniform sell off? Something seems weird about that to me. Any real theories, or explanations?
You have to understand that bitcoin is the main coin of the crypto market or we can understand it as the "eldest brother" of altcoin. so when it prices up or down all other altcoin will be affected. Just like the dollar will affect other currencies