I can tell that I'm starting to get old when I think of 20 year old anime as fairly recent. But alienation and atomization didn't begin in the last 5 years, it has been a long process.

You can also tell the way that things are starting to turn less grand on possibilities. The recent glut of isekai anime is a perfect example as you would have isekai before, but now they tend to all be based on online games. That is where viewers can imagine themselves in the shoes of the protagonist.