If yes, this is very interesting why should they look at cryptos differently as other assets.
Yes, it is active for some time and because of this Germany is often called "Bitcoin Tax Haven", but it is not only about bitcoin, but also for some altcoins (Litecoin, Ripple, Ethereum). I read that Denmark and Slovenia also have very positive laws regarding crypto, but I am not sure how accurate it is. You can read more about Germany here.
I would say those who know or understand bitcoin are much bigger problem if they have a bad intention. They would know how to damage bitcoin or in general all cryptocurrency, just by hit hard crypto exchanges or to introduce some crazy laws which are difficult or impossible to comply with it.
I think ECB will not do such things, especially because Germany is very positive toward cryptocurrency and we all know who is unofficial boss of EU. I think the main reason why this issue is not solved on EU level is too many other problems which currently exist, and fact that cryptocurrency at this moment is not something what's on the list of priorities.