There is a major difference between the two hacks..... The Ethereum one was a direct exploit to the core of it's network and the Bitfinex was a third party service using Bitcoin as a currency token.
Bitcoin did not fail at anything at all, it's code is still secure and there is no need for a fork.
.... You need to see the difference between the two hacks or you will never understand Bitcoin. The
unfortunate part of this hack is that when these services fail, Bitcoin is blamed.... The people offering these services goes on as normal... spreading the blame and damage to other people.