Bing, everyone on this board has the right to express their views, within the rules of Agoracom. Even you.
In the same way, making a complaint to the exchange is also everyone's right.
Legal advice is sometimes an estimate of what the client can get away with, or worse. And, how would you know what MEO's legal councel has given for advisement?
If MEO has done nothing of concern, then a complaint will quickly be dismissed, if not, then question will be asked.
Many on this board want the NR that was promised at the AGM. I would think that you, as a shareholder, would want that as well.