<p>I don't know why you have that attitude, but it is a legal requirement in many countries to display the copyright. Not only that, but even the commercial packages have this "worst feature".</p>
<blockquote>
<p>Let every person be subject to the governing authorities. For there is no authority except from God, and those that exist have been instituted by God.</p>
<p style="text-align: right;">Romans 13:1</p>
</blockquote>