It is not all about Thaksin but the modern conflict started on his watch as PM, worsened and continued under his successive puppet governments; Somchai, Samak, Yingluck etc. and is set to kick right off again with this denial of justice for the victims.
It was Thaksin's policies that led to the conflict kicking off and ultimately the incident at Tak Bai. He also excused the Thai Army and said they did nothing wrong.
However, the military is certainly to blame and now nobody will face justice for the deaths of 85 people.