"So, what different effects did the drastic changes in social trends bring?"
The first change brought about by the Blue Wave was that the average human lifespan began to rise again, returning to an average of five hundred years.
Despite the existence of Virtual World Technology, the majority of the populace was not fearful of physical death in the real world, so the priority of longevity technology was not high.
An average lifespan of five hundred years had already begun to impact societal stability; the marriage system was falling apart, and getting married had become a very sacred thing. Finding one's other half could bring blessings from many people.