No, its not. Someone, or some group, is shorting it to the ground. Maybe its the Mt.Gox trustee, but whoever it is, this will prompt regulation by governments, at least on the exchange level.
Bitcoin was defeated as a currency. Nobody is going to use it to buy anything, as the merchant who accept it will lose money in a matter of hours, if not minutes. Nobody is going to use it for wages either. If it was only going up, adoption would be open to the masses and the bankers would have to swallow it.
Better to wait until all Mt.Gox coins are dumped, and the price recovers. I would say that if the price is above $10k for a entire month, then its safe to buy. If not, buy only when it reaches three digits.
I think it's safe to say that bitcoin isn't going down to 3 digits. There's going to be a ton of buyers at the low to mid 4 digit range that I doubt we're going to see any prices below $2000 consistently as we try to find a bottom at this bear market.
I wouldn't say that bitcoin was defeated as a currency. It just means that adoption has not ripened.
Also, with or without Mt Gox coins being dumped, would you agree that bitcoin's pump had to come to an end one way or another and enter a bearish phase exactly like what we're experiencing now? There had to be profit takers at some point.
Anyways, instead of buying when price is above $10k and calling it safe or buying when price is in 3 digits(which probably will never happen), a more logical thing to do would be buy your way down, split up your capital to buy coins regularly, starting now seeing prices are already decently low.