Forgive my whinging but ... it really annoys me when I see blog posts which go on about the difference between leaders and managers then implies that leaders are better than managers.
Some people are leaders AND managers.
Some people are excellent leaders AND excellent managers.
Some people are excellent leaders but poor managers. If they're excellent leaders then they probably delegate the management to an excellent manager.
Some people are poor leaders and poor managers, but they're good at doing other things ... and hopefully they avoid the management / leadership roles.
And so on ...