That said, it's a good sign when old money gets involved with new money. I don't see how this is bad for Bitcoin any more than being adopted by any other prominent money guys.
They are investing with new money, most of their wealth comes from Facebook.
Of course, it would be kind of a nuisance if they suddenly claimed they invented Bitcoin and try to sue Satoshi.
Hmm, I actually think if they tried to attack the Bitcoin system with lawsuits (Because you can't really attack Satoshi) some large holders of Bitcoin would have them assassinated. There is now too much money at stake and some people are now holding $50,000,000 worth of Bitcoin, hordes which will one day make them billionaires. If rich kids start attacking Bitcoin they are simultaneously attacking everyone that holds Bitcoin. This is the type of thing that can start wars.
EDIT:
I want to note that if Bitcoin is around in 5 years and growing still, it will be like a religion and the very idea of Bitcoin could very well redefine the world, if not Bitcoin then the idea of a crypto-currency itself, a superior offshoot perhaps?
What Bitcoin has started may never be undone. Its out the box for better or worse, and the system has millions that are interested in its adoption. This kind of project is unprecedented and its ideologies like these that could start a war, if the ideology and the system was attacked.