Of course not. I have posted the "original" stylesheet that didn't
include the xmlns declaration. If I make the change you suggest, the
XSLT becomes (the same but with an extra xmlns declaration in
xsl:stylesheet tag):

  <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>

best,
-Rob