I used to tell everybody that futures trading is a scam. It's a casino that tries to look like an exchange and has nothing to do with real investing.
Sam also had nothing to do with bitcoin. He affected the crypto market as a whole but that's because he invested and held a lot of altcoins.

Bitcoin got affected by this only because dumb people held it on SBF's exchange and when he paused withdrawals they tried to sell their bitcoin and try to withdraw stable coins or fiat.
An exchange that is insolvent should've been immediately cut from the tickers so that it can't affect spot price on other exchanges but the system is far from perfect.

In my eyes bitcoin remains unaffected. It's good that SBF got his ass handed to him because he was a proponent of centralized blockchains and regulation. We don't need people like him in the space.