They were supplied by Iran then as well. That wasn't even close to the entire Israeli military. Strategically Israel can't commit that much of its defense to a single front.
I know everyone likes to tout it as something that it was not, but we're talking about a one month bushfire war where Hezbollah knew they couldn't prevent the deep penetration of Israeli forces into Lebanon and chose to play Guerrilla and wait for the political pressures to end the war.
It was a quintessential 4G conflict.
They had no way to remove the IDF naval blockade, and could do nothing at all to cancel out IDF air superiority. They truly didn't even have the capability to forcefully eject IDF ground forces from their own territory. Hezbollah poked a bear and got chewed up. *shrug*
Bleh. Just depends on how you want to define things.
*Waits to be accused of crying for "Mother Israel" or whatever nonsense.*