Should National knight Nicky Hager for services to journalism?

An MP suggested to me yesterday that the National Government should knight Nicky Hager for services to journalism and the nation. Their reasoning:

• His Seeds of Distrust book in 2002 stopped Helen Clark getting a majority
• The Hollow Men in 2006 effectively propelled John Key to the National Party leadership and victory in 2008
• Dirty Politics in 2014 helped National increase their seats in Parliament and gave National and ACT a majority

Surely that is enough to offer him a knighthood?