As far as I know, Shariah prohibits interest (riba), gambling (maysir), and investing in unethical businesses (haram). Bitcoin is neither of those things. But let me ask you, why should the Bitcoin community care about that?
You are correct, Bitcoin is not any of these taboos, but unfortunately some Muslim clerics forbid working in Bitcoin because they do not know much about Bitcoin.
They only hear about the collapse of some exchanges and some coins and they think that Bitcoin is the reason because they do not have enough knowledge, the problem is that they issue fatwas that prevent people from working with Bitcoin based on this little knowledge.