The boomers are the largest, richest and most politically powerful generation. The finger goes squarely in their direction.
Discussion
The blame of one age group is antiquated and personally, I see this as a trope resulting from a collectivist mindset.
I don't view the world that way, and look back to the fable of the frog and the scorpion.
It's my nature...
I think I agree with Two Angry on multiple points. Largest and richest are relative terms that we’re applying to the most immediate history. Can we not say Ancient Rome or Egypt were equally rich and large relative to their world? Yet characteristics like greed and hedonism are just as pervasive today as they were then. It just hits harder for us today since we actually know some Boomers that are terrible people.