That is a gross misrepresentation and a misunderstanding of the point of a decentralized store of value. "All those people whining about the Mtgox bankruptcy proceeding" were not using a decentralized store of value. They were using a centralized broker that handled things for them. If they kept their own private keys and managed their coins directly, in a decentralized way, they would be still whole today.
Not sure what your point is, dollars(cash) can be stolen as well.
In other words, even if you think Bitcoin acts as a "store of value," that still does not make it "money" according to the law. You can have 1BTC or 100BTC, but the law is only concerned with the monetary (i.e. fiat currency) value at some particular time (not necessarily right now).
That belief structure is being challenged as we speak.
> Tell that to all those people whining about the Mtgox bankruptcy proceeding
The only thing that proved, is that you can't trust a bank.
(And of course, if I can pay my taxes and mortgage, how can anyone claim to have removed the central authority from money? Just like the gold standard, nothing would prevent a government from changing its mind about whether or not to accept Bitcoin for tax payments.)
Like I said, if you already believe that money can exist without a central authority, Bitcoin simply serves as validation. Otherwise it does not really change anything, because if you accept mainstream views of money, then the premise of Bitcoin makes no sense at all.
You think Bitcoin is a decentralized store of value? Tell that to all those people whining about the Mtgox bankruptcy proceeding, which is being resolved by paying for the lost BTC according to the price in Yen at the time Mtgox declared bankruptcy which is a tiny fraction of the current prices. When push comes to shove the "value" being stored is measured in fiat currency, with all its associated central authorities.