There is so much wrong it needs broken down shotgun style
Consider the dollar.
Apples to oranges right off the bat
The dollar is theoretically limited within the subset of United States currency while the concept of national currency itself is only limited by the number of nations on Earth.
Not true. Fractional Reserve banking creates dollars out of thin air in the form of debt. Actually what you said doesn't really make a point.
Now to bitcoin.
Like the dollar the bitcoins are theoretically limited in supply. But what if bytecoin comes along, then gigacoin, followed by googlecoin and so fourth? There seems to be no limit on the number of bitcoin imitators possible.
Bitcoin is limited in supply. Not theoretically. Only X number of bitcoins will ever exist. Alternative crypto currencies do not affect the supply of bitcoin.
While, like dollars, there might be a limited number of bitcoins within the subset of bitcoin, the concept of bitcoin is unlimited unlike the world’s various national currencies.
All you said is "Once the genie is out of the bottle you can't put it back in." Yeah, once an idea is released to the world it's there. This means nothing.
Competition will utterly devalue bitcoin unless it is adopted by particular nations to the exclusion of its competitors, however that is not to say that other nations will not adopt one or more of bitcoin’s competitors to the exclusion of bitcoin .. they most certainly would.
Competition will devalue bitcoin if the market determines other cryptos to be of greater value. That's how competition works. Whether a nation state adopts it or not has little to do with it.
And how is that materially different from our current international system of free floating national currencies?
Bernanke isn't controlling the supply of bitcoin?
You can't print more bitcoin to fund a war?
The finite supply makes the demand the driving factor behind bitcoin and it will continue to gain in value as adoption increases.
No one can ever take your bitcoin from you unless you let them.
No one will ever know how many bitcoin you own unless you tell them.
You're free to choose whether or not you participate in the system, there is no gun to your head forcing you.
That's a start. I think you should start learning up on what currency actually is before trying to make comparisons between fiat and bitcoin