I don't really believe that OCDB said that either. OCDB do not agree with buying votes. Not buying votes for profit just buying votes. Look at this quote from them...

The downvote you received is to discourage the buying of votes from bidbots. We kindly invite you to join us on the #NewSteem attitude, where good content receives votes and the organic content get the most attention. Buying votes hurts you, other authors and the Steem Ecosystem in general, please don't do it.

It doesn't say. Hey but buying votes for promotion is ok.

And again. TEN DOLLAR VOTE?! for 28 steem, no ROI?