That is what makes mages really frustrating to solo those rare elites with. You either overgear their health or you’re better finding people. I guess the only other class worse is Rogue, because at least a frost mage can keep running around.
Other DPSers are indeed bound with the same weakness… however they got either a tank or a healer spec to make that viable. At a slow pace, but still viable.
I wish there was an option in the class tree to run like a single tankier Mirror Image, or something like that.