Agreed with what you have said. But I believe that the main thing about those countries not going to attend might not just stamp from China's growing influence alone.
I have read some of what Liu Xiao Bo had written and presented... and seriously I would have slapped him right across his face if I had the chance. The most memorable one was that he suggested/ proposed that China should be colonise for 300 years (I think), seeing how Hong Kong is doing... this is what I would call the thoughts of a 奴才...
I mean... no matter what is the state of China... or any independent nation, it should never come to this thought. It is a traitrous thought... plus at China's present status as compared to say twenty years ago... isn't it better and better. I mean... even US and England, took hundreds of years to finally get to what they are today. Modern China only had fifty plus years... and after so much turmoil and stuff... and this supposedly nobel prize winner, would simply brush away all these efforts and said that it would be better that China was colonised for 300 years... I don't know about you guys... but any proud chinese would have slapped him across the face.