The archaeos digging at Knoll have not read the reports and were not at the presentation meeting so they are just about as knowledgeable about this as the public. The other one I grant knows his Silbury, but so do I and I disagree with him. What HA are calling for is the right of a public to learn what is going on and either agree or disagree. He agrees with that I am sure.
My understanding of the meeting at Avebury is that it would (should have been) an exhibition during the school holidays at the Barn. A list would be up and on the website for those wanting to attend a meeting, a venue would then be booked.
The largest argument supporting the rebore aside from repair is public education, it should start with informing the public of what is going on.
VBB