From the perspective of regular customers, you're right. FTX did function well.
However, Alameda created the FTT token out of thin air and then used their own FTX exchange to trade FTT amongst themselves to establish a bullshit value for the token. Then they went out and borrowed billions from institutions using a massive treasure chest of FTT tokens they created out of nothing for themselves as collateral for those loans. So FTX still has plenty of liability for being an integral part of that manipulative scheme.
Hard to make the case that Binance is much different with BNB, various flavors of Binance chain and all the various dog/cat meme coins.