Not in the slightest. The phrase 'War On Terrorism,' elevates criminals to the status of prisoner of war, and helps legitimise the whole activity.
It's an unwinnable war which also helps the arms dealers. Certain actions by the US in the 'War on terror' such as the illegal invasion of Iraq, extraordinary rendition and Guantanamo Bay have acted as a recruiting sergeant for IS and Al Qaida.
The phrase only came about after 9/11, which suggests America only cares about terrorism when it happens in America. Americans were quite happy to bankroll the IRA.
The War on Terrorism was wrong when Dubya coined it, and it's just as wrong today.