This is an interesting question - how to determine the effectiveness of any particular protest or campaign.
Is the measure of success merely whether the situation turns around and the initial decision is reversed - in this case that the Dalai Lama retracts his words and now authorises the practice? Or also that the measure of success and effectiveness is in the level of awareness it raises in the world about the practice? That it brings the practice out to many people who would otherwise never hear of or be interested in the issue? After all, the very message about this website is not to promote the practice at the expense of bringing down the Dalai Lama's name or the CTA in
So the effectiveness that Sharmar Rinpoche talks about is not just about "silencing" the CTA but could also refer to a second level of awareness - the rest of the world are hearing about the protests and therefore, about Dorje Shugden. Some may actually think that the protests have been ineffective in reversing the CTA's decision - after all, the ban is still very much there and the CTA are still doing their best to enforce it among their community. On the flipside however, more people than ever are practicing today, with huge Dorje Shugden monasteries and institutions growing throughout the world. More people have heard the name Dorje Shugden than ever before in the world. So yes, while the ban hasn't directly been reversed yet, the long term effect of the protests are creating a wave of change, education and blessings on a spiritual level for the practice to grow.
At the very least, the protests, websites like these and conversations on public platforms like the internet (forums and social media avenues) are diluting the opposition to Dorje Shugden. People are learning, getting information and realising, hey, this practice isn't all the bad that they're saying it is. If nothing else, the percentage of people who are supporting or neutral towards the practice is growing stronger over the percentage of those who are trying to suppress it.
I think that's pretty effective!