I agree but it appears that Bitcoin continues to influence the rest of the cryptocurrency market to a significant degree. As we've seen in the past few weeks, uncertainty for Bitcoin translates to uncertainty for cryptocurrency (and vice versa).
Because every trend on the market are follow the status from Bitcoin (represent for crypto world) and when Bitcoin have problem, altcoin will crashing too. I think not have any altcoin can replace Bitcoin if next time the price of Bitcoin comeback to range $1500-$1200, so don't believe Ethereum or other altcoin can helps you keep safe your money. FIAT is best place at now.
i am thinking the same as you. its because until now bitcoin is still be the leader of altcoin and always be. we can take a look in yesterday when bitcoin reach $18xx-$19xx, altcoin is crashed like you said but then fortunately bitcoin can recover until now and altcoin is trying to follow bitcoin too.