CNN's biggest backers spent decades campaigning for war with Iran. Every day for years and years Wolf Blitzer would take some time in the situation room to tell us all about the impotance of binging regime change to Iran, going back to the 90s.
If even CNN are too biased for your tastes then it's probably not them. It's you. Hegseth is also a true believer.
saying that Iran would benefit from a regime change (everyone knows this, easy topic for Blitzer to kill some time, no one watched him anyways) is not the same as “campainging for war” (we always knew we cannot win).