Panacea, one of the most incredibly powerful capes around, is terrified that she's going to become evil and fuck people up horribly, if she fights or operates on the brain.
I give you that its a possibilty. But its also irrational. The 'absolute power corrupts absolutely' concept completely fails in front of a setting where there are dozens of super powerful heroes, who are genuinely good and caring people, despite their ability to murder everyone in North America.
The monsters DO exist. But there are no absolutes. Absolute power does not always corrupt absolutely. As with anything. It depends on circumstances, the person in question, and many other factors.
The problem with the doctor analogy, is that those doctors, through using their powers of medicine, are not capable of averting armageddon.
What we're looking at is roughly that.
An evil dictator has wired a signal device that will start nuclear Armageddon to a young childs brain. The doctor can avert the nuclear apocalypse by operating on the child and removing the device. The doctor, terrified that he might hurt the child, or lose control of himself and become a foaming lunatic if he operates and then has the signal device in his hands, decides to not operate on the child. Nuclear armageddon starts and everyone dies.
Was that the smart choice? I don't think so.
Now to be fair, there are many more complexities to the situation that aren't expressed fully in the analogy, but that's roughly how I see the character, and why I hold her in contempt.
Of course, you're free to disagree. Its a personal dislike.