If Bitcoin crashes back to $5000, the altcoins will crash back too even more and many altcoins will become worthless. It is proved that most altcoins markets are depending on the BTC market and price, and any increasing or decreasing of BTC price is affecting altcoins prices as well.
Well, the reaction from altcoin is what will come because bitcoin has a great connection to altcoin, the value of altcoin may get a slight sock and go down but a high rate is only temporary because we need to know that bitcoin is down, capitalization will need to run to the right position, it takes time for that and the proper position is altcoin. And altcoins will constantly have pumps when capitalization returns, this scenario is something we can see often and this is what I want right now, altcoin is catastrophic enough, it needs to come back and so do investors