Leadership and being Opinionated

In many corporations, people who claim to have leadership qualities tend to be less opinionated. Given any topic (or) any issue, they are either neutral (or) have no opinion. May be it's one of the things taught in management training sessions.

Any person who has good knowledge (or) background about an issue tends to have some sort of opinion on how the issue needs to be tackled. What good is having knowledge otherwise? On the other hand, if I have no idea about an issue, I tend to be neutral and non-opinionated.

So, does this mean I got to be dumb to go up the corporate ladders? May be not. In my career i have seen poeple with good leadship skills and bad leadership skills. I beleive people with good knowledge about what they work on and who can empower other people to learn and acheive their goals are true leaders.