Why do you think the US government created and maintains bitcoin?
I don't, and never implied that the US government maintains Bitcoin. Bitcoin core is maintained by the Bitcoin core team, not the US government.
Satoshi, no matter how you define him/her/they, has not been involved with Bitcoin in any way for over 13 years.
Maybe you should try to read the OP again, because you have interpreted something rather bizarre here.
Um, you don't seem to understand how Bitcoin works. It is not a secret system run by some guy named Satoshi. Finding Satoshi would not de-decentralized Bitcoin.

Regardless, I think the much simpler explanation is that people are curious...
I know perfectly well what i am saying. Ask yourself why is who Satoshi was is such a big deal that some people spent billions on knowing who he was, if it's not for shady purposes?
Nobody has spent "billions" trying to discover the identity of Satoshi. Where did you get that idea? Journalists have spent perhaps a few million over the years, but mostly it's just been a lot of time by individuals.
Satoshi identity not been know is the reason why some people didn't sue him for the features of Bitcoin because some people never like the idea BTC.
You cannot sue somebody because you don't like the idea of their product. Satoshi would be under absolutely zero risk of being sued for creating Bitcoin.
So I agree with some of your points in this questionable stance, but we can't really prove whether he was a government person or it was a government project, because it's sure he was a Japanese guy, right?
I never said nor implied that Satoshi was a Japanese guy, only the the NSA paper cited a Japanese researcher with a name that sounds a little like Satoshi's---and that calling their project that would have made a nice tribute to this researcher, Tatsuaki Okamoto.
Indeed, even if Satoshi was not the US government, there's still a decent chance that the author of Bitcoin called himself Satoshi because of Tatsuaki Okamoto. That sounds pretty plausible I think.
Satoshi's Encryption Choice is very different from the involvement of the US government where the US government recommends NIST P-256 while Satoshi Nakamoto himself recommends secp256k1, In fact, this is a statement to weaken the involvement of the US government in interfering with or defrauding Bitcoin.
As somebody who has used encryption on a higher level, my assumption would be that this choice was based on the availability of libraries, the ease of implementation, and so on. Both approaches are perfectly secure, so the only difference at the application level has nothing to do with the actual algorithm.
And again, the US government has 2 million workers. Just because you work for the US government doesn't mean you magically know everything the US government does or what every other worker is thinking.