I see you are looking at the money side of steemit. There are many things you do not see behind the scenes. This is normal for new members (I've done it too) Judging without knowing what is going on. It's true like all organizations there are bad apples. They are rare but as we grow I'm sure we will get more. Many of these older members who make high rewards work behind the scenes giving their time and expertise for free. Some make huge rewards for starting up new apps that have made them no money until they post. This economy isn't the same as what we're use to so, of course, the quick judgments comes. Ned had high rewards but if you looked closely you would have seen he didn't take payment for the post (strike thru on reward indicates that)
I am sure if you judge people by the rewards on steem you won't be with us for long. You'll get frustrated and eventually leave. I hope you give us a chance and learn what the gift economy is about. Listen to some youtube interviews with Ned and Dan. Maybe after you do you may have another perspective. All in all I welcome you and hope your time here will inspire you as I know you have a lot to offer us.