Earlier quoted context omitted.
Dr Ramani is pretty awesome, but all her views are heavily skewed towards narcissism and it's dangers, rightfully so, since people seem to underestimate that trait. It all depends how you define charisma. If it's "larger than life" it can be and is often abused, if it's "easy to be around and suave" that comes closer to what I would think charisma is.
The difference between charisma and narcissism may be in the eye of the beholder. However, I can think of a few people in my life that are personable and incredibly genuine; the kind of person that seems to draw the best out in others. I wouldn't be happy to hear them described as narcissistic.
Some people want attention and do all the right things to get it: pursue the right goals, get people together to do stuff that's good for humanity. You'd better believe that many people whom we view very positively might have been narcissists: Ghandi, Mother Teresa, etc. But the difference is they did GOOD things to get the attention and power they thought they deserved.
I think it has to do with the values you absorb as a very young person. We all have a drive for attention, for power, for comfort, for security. For some the drive, and the talent or "charisma" to achieve those goals is higher.
The decisions made along the way, the considerations of the side effects, and what you DO with that power are what distinguish people like Donald Trump and Hitler from people like Barack Obama and Nelson Mandela. And let's not get it wrong; even the latter two have a few spots on their records. No one is perfect.