So perhaps he wasn't shredding his bedding because he was stressed. He was probably shredding it because it's fun! 🆒
Apparently, it is fun! Mine doesn't take the bedding out the door of the crate, she prefers to pull it through the wires and drags the crate halfway across the room. I'm picking my battles with her as she has had a rough life.
When I say "No.." my girl gives me that wrinkled forehead look as if to say, "whatever…" and goes off to find something else that is entertaining.