What can they do?
NWBO, at a minimum, can provide the explanation you provided for why they cannot share more information instead of using vague phrases that are open to many different interpretations.
Remember that this is a company that does not hold quarterly conference calls or even take a video of their Annual Shareholders Meeting (or offer an official transcript).
Despite horrific performance in terms of preserving shareholder value, a situation which calls for more than normal accountability and transparency rather than less, they have never offered a comprehensive explanation for what has gone wrong, what they specifically intend to do to fix it, the time frame in which they intend to fix it, and how that time frame might be adjusted and when it is adjusted, why it is being adjusted.
Instead, they just ask each individual shareholder to sit around trying to piece together a puzzle which is fine except they turned off the lights in the room and are hiding half the pieces in a lock box.
Even if one anonymous shareholder pieces together enough of the puzzle to see what is going on, they are unlikely to believed and successfully pass this on to the others. That is because the hidden puzzle pieces and darkness in the room means there is so much room for alternative interpretations that it is hard to know what to believe. Then there is the past history where so many confident interpretations of what the company was doing have been proven mistaken by subsequent events.
NWBO needs to quit outsourcing shareholder advisories and education about the company's business model to anonymous bulletin board posters, however skilled, intelligent and well-intended they may be (and though I frequently disagree with them, they are often all three).