If you don't leave your coins and don't lose money on them, then there's no reason for you to be upset about the demise of FTX. I've never used FTX so even if it crashes it doesn't affect me. Your portfolio loses value because you have invested too much in altcoins or you do not use idle money to invest. Crypto winter is bound to happen whether FTX crashes or not, you didn't prepare well for it.
There kind of is; It does effect all of us as it effects the consumers confidence in Bitcoin. If we keep having these headlines, because people continue to use these sorts of services, and the headlines show that most of these exchanges seem to be run by people looking to exploit their customers, then it does effect us all.
We don't need these types of people running companies that operate with Bitcoin, and we definitely don't need these types of headlines every few years. It might not be obvious in the long term, because a lot of us forget about it, but it does stunt growth, and adoption for quite a while after. Would we have seen such dips in price if this didn't happen? It's hard to be absolutely sure, but I imagine there's a element of truth to that.