A major aspect of Germany's stance on bitcoin is that there is no capital gains tax at all (0%) on bitcoin specifically - as long as mined coins they're held for one year prior to selling. This is in sharp contrast to almost anywhere else where capital gains tax would apply to any financial instrument by default, including bitcoin, metals, or anything else bought (or "mined") and resold later for profit.
While not too significant in the current mining environment, germany may become very attractive for early bitcoin adopters with large btc holdings.
A large part of what made the US so attractive for investors in the early days of the internet was the pro-innovation/pro-business business regulatory and tax environment at the time. Much has changed since then.
Holding for 1 year, for a capital gains tax haven in not such a bad deal. Many miners are holding anyway. And if you are only selling your year old coins, you can still show income after your first year.
The paper doesnt say anything about mining, its about buying and selling BTC.
I can already imagine how you try to explain to a tax collector that you have found this money.