I agree somewhat but there are variables that affect this also, the main one being if you're a lousy writer you won't be putting out much quality posts, on the other hand I think that the quality that counts is the quality of your followers (by this I mean their Steem Power) the higher SP your followers have the higher your rewards will be, and the quality of your posts doesn't matter as much as this. I'll tell you my case I have 9 months here and have a little over 500 SP and have never powered down, obviously I am not a very good writer, but I have seen people who only paste links or videos and they have a much higher amount of SP, with less time than I. So it comes down to your connections, even though of course if you do post a top quality article it would get many votes because it is a quality post.