Why contemporary poetry is boring

Why people don't read/listen to contemporary "poetry".
You also hear stuff like this at song critiques.

http://doonesbury.washingtonpost.com/strip/archive/2014/10/10

Example of "mellow speak".

William Blake's:
The moon like a flower in heaven's high bower,
with silent delight sits and smiles on the night.

is translated into:
Oh wow, look at the moon!