The impacts about the altcoin on the bitcoin was the old phenomenon.When their is pump in the bitcoin,say was impacts in the price of most of altcoin.Their is secret in this line .Whenever the price increase,the holding people of bitcoin will cash out.Then buy most of the trusted altcoin.So the demand of that coins will be increased.Finally the altcoin price also increase in value.
You're referring to pump and dumps? I don't know if I'd consider momentary crypto pumping schemes to be inclusive of the monolithic market. Maybe they are, I haven't been bothered to compare the price charts. Larger world events have an effect on all markets, including the crypto market. Bitcoin is inclusive in that crypto market, and as a result Bitcoin moving in price, most altcoins follow. I don't see any reason why this pattern would be disruptive considering this applies to literally every market there is.