<p><strong>My two cents:</strong>  </p>

<ul>
<li>I'm generally reluctant to downvote, but you've laid out a reasonable argument, and I couldn't much fault you for downvoting. (I think you should include an explanatory comment in each case, though.)  </li>
<li>If you go on a downvoting spree, it will undoubtedly get the OP's attention (whether it will help is another issue... ), but it will be automatically reversed, as @Macro notes.  </li>
<li>Ultimately, you are free to do whatever you want, as @Macro also notes.  </li>
</ul>

<p><strong>Here's another suggestion:</strong>  </p>

<p>If the OP asks a question that you have answered in your answer to the OP's previous question, vote to close as a duplicate (again, with an explanatory comment).  This does not match the duplicate close vote definition <em>exactly</em>, but it's certainly close enough, in my opinion.  Likewise, several of your other descriptions of poor use of the site are close enough to one or another of the official close vote reasons for my satisfaction.  Moreover, I suspect having question after question put <em>on hold pending improvements</em> (as opposed to <em>downvoted</em>) is more likely to lead to improved behavior.  </p>
