One important question to ask is: who, and on what basis decides whether a post is "over- rewarded" ?
Take a look at steemworld.org. You see that for this post, the "author payout" is ~131.82USD
Now if you look at the Steemium comment under this post, it says:
"126.23$ has been spent to promote this content using Steemium."
That makes a net payout to the author (me) of about 5 USD
Do you consider that to be "over rewarded" ?
On what basis, how do you reckon my post (implicitly, the time spent to research and write it) should be valued ?