I noticed that in times of crash, there are no optimists around preaching "oh no! bitcoin will never go below 600-700! it will be $5000 next month!". They must have bolted off with their cash-out with their tail between their legs.
I'm an optimist, but I'm not going to post ridiculous claims. I'm not going to argue (much) against ridiculous claims either. These trolls shouting "Bitcoin is dead" are trying to scare sheep for their own agenda.
Bitcoin will survive this transaction malleability issue. The exchanges will function again soon (except Gox which is non-functional by design). In a few months this will be forgotten.