True.
However, It's implemented in a shitty way, in my opinion, which has always been my biggest complaint with the game. Only Necromancers and Paladins have a way of removing immunity through a skill (Sorcerer Cold Mastery reduces resistance, but does not break immunity), when it clearly affects every class. Other classes have to rely on very specific item(s) to do that, instead. Which is just stupid.
And leaving the immune monsters behind goes against the instinct so hard that my bones try to tear themselves out of my hands in protest.
I'd like to see the game re-balanced around the removal of Immune monsters altogether. You can keep resistances, but fuck Immunity.