Conversation so far:
What was the reactions?
News of Irwin's death prompted reactions around the world.
Then-Prime Minister John Howard expressed "shock and distress" at the death.
When did he die?
CANNOTANSWER.
How did his family take his death?
CANNOTANSWER.
Is there anything interesting about this article?
Criticism of Irwin's career following his death came from Dan Mathews, vice-president of the animal rights group People for the Ethical Treatment of Animals.

Question: What did Dan Mathews say about Irwins death?
Self-contained rewrite: What did Dan Mathews say about Irwins death?