I dont know where you guys got this information that Bitcoin was stamped as real money or "Legal currency" the only country that's even come close to this is Germany.. and even then it's only considered legal as a unit of account so that they can tax it.
I agree with the quote just want to expand on it further.
There is a lot of misunderstanding and disinformation regarding what BTC and altcoins are.
Much of the confusion is the result of most people being brainwashed from birth to be statists because they attended public education and watched too much TV.
What people need to understand is that governments are not "real" They are legal fictions. Yes I know there are armies, buildings and physical things that manifest themselves but "government" itself is really no different then a corporation.
A bunch of people get together, write down some shit on a piece of paper (constitution), they sign it and poof "government" exists where before it did not.
So if government only really exists on paper then it is easy to understand that governments jurisdiction does not extend to infinity. It can only extend so far as they have contracts, or agreements, legislation, treaties etc. All things that also only exist on paper.
Now since BTC and other alt coins were basically created open source out of nothing and no contracts or legislation were made to create them, there really is nothing on paper for governments to attach themselves too. There is nothing for them to contract with. They have no jurisdiction, period.
Now they can claim they do, they can say anything they want and you can believe them if you wish. But BTC and altcoins are outside of their control because they cannot contract with or create treaties with something that is not a "legal entity" and has no governing body (another corporation basically) with which to contract with.
So is BTC money? Well it depends on your definition of "money."
If by "money" you mean "legal tender" something created by a corporation, (the federal reserve is a corporation) then no it is not.
If by "money" you mean something of value that people are willing to accept in exchange then yes it is.
Now they can regulate the trading of BTC into USD or other government currencies because you are dealing in "their" money. They get jurisdiction on the fiat side of that trade, not the BTC side.
Just like they can tax you on your labor, as soon as you convert it into fiat, not before.
For example if I build a table from raw materials. The table is worth more then the material it is made from. I have gained "value" but tax is not due until I sell it for fiat.
Hope that helps people wrap their heads around what cryptocurrency is.