For whales or famous authors like @papa-pepper it doesn't change much if they vote on themself. Upvoting your own post and comments is always a subjective perspective. I invested +10000$ and expecting a ROI of daily 5-10$ seems fair in my eyes. If I get enough upvotes from others then I selfvote less. It is 0.1% ROI daily. @jerrybanfield on the other hand reaches easily 0.5% ROI. Selfvoting doesnt really add anything