According to THE NEW YORK TIMES, the next pope of the Roman Catholic Church must have charm. That trait, which comes under the umbrella of emotional intelligence (EI), always has been highly marketable. In the "New Testament" there is the parable of the two sisters of Martha and Mary. The one who knows how to listen is featured as the role model for Christianity, as opposed to the worker-bee sister focused on getting tasks done efficiently and effectively.
Sure, leaders and managers who aren't charming have gotten to positions of power, influence, and wealth. However, the odds are charmers will have an easier and smoother time of getting what they want professionally than the bullies, self-absorbed, and always-on-point. That's because they are nice to have around, especially in a marketplace in which turbulence is the new normal. Non-charmers often present unnecessary tension in the workplace.
One wonder if Sheryl Sandberg's followers of "leaning in" will wind up with self-imposed constraints on their career achievement because they ignore the utility of charm? That could happen and they may never realize that had they not leaned in but been more traditionally warm, vulnerable, and verbally diplomatic they could be at the top. Had the charming late Sybil Crawley on "Downton Abbey" have chosen a career path she might have achieved far more than her strident sisters Mary and Edith. How we all mourned when Sybil died.