Yes, I am being a bit tongue in cheek. However, there's no conceivable amount of BTC that can maintain opsec vs. the 911 perps. $2M is not close to enough.
I am known to myself to be relatively stupid however, and I will concede that it is possible to spend the BTC without actually taking possession of it or converting it to fiat, so that isn't the real opsec difficulty.
Since I am not a pen guy, I won't discuss particulars of opsec impossiblity. I just don't think it's possible for even the best hackers to be proof against the very architects of darpanet, even if they have bespoke hardware that does not include the factory backdoors commercially available chips do.