Conspiracy theories are only fun if you have substantial evidence. This theory doesn't. What you claim as evidence is completely and utterly circumstantial, and assuming Gavin Anderson to be Satoshi based from just that is a ridiculous stretch.

Neither China nor Russia has imposed a complete ban of Bitcoin. Both of them seem to be on the fence. Both countries are also known to be repressive, with their citizens being unable to enjoy certain liberties other countries give. The US is no such country so it would make no sense for it to take the same steps.

Lastly, I don't see any reason for any three-letter agency to create Bitcoin, or at least not the way it is. Why would they bother creating something they can't control? These are the type of guys who spy on their citizens and want a backdoor on every cellular phone. Creating Bitcoin would be against their modus operandi.