IMHO Thai society, especially urban society has changed massively over the past 30 years. People have become more affluent and have obtained chattels and technology that wasn't dreamed about by their parents.
People are also exposed to often the worst aspects of Western culture through cinema (movies) TV and the all too seedy tourists who can arrive in some areas here. They emulate this behaviour.
Two generations back there were fewer schools children were sometimes taught by monks how were educated and rightly respected by all. Now some people become monks if they cannot find a job.
Religion has severe problems as a result. I feel some temples are blatantly commercial, such as Dhamma Kaya.
Young monks want the use of technology, such as smart phones which their friends have. You can see them sending IMs to their friends outside their temples. Some have WiFi.
Thais love Temples to look big and colourful, the bigger, more golden statues the better. Personally I would rather give money for sanitation or education.
Forest Temples still maintain simple Buddhist teaching and practices, but I generally avoid urban temples because of the commercial aspects.
People are slowly loosing respect for monks who are seen behaving badly: smoking in Temples, asking for money etc plus the all too common scandals). Unfortunately as the urban monasteries seem to be the worst, they are seen the most. There are real gems, but rotten apples too.
Many people have little interest in or education about religion, they are more interested in ghosts and superstition, and this is regrettably reflected in many temples.
Thais need to decide how to keep temples relevant to society and how they can evolve with society, but at the moment, this mammoth task just doesn't seem to be happening.