That was covered fairly extensively here[1], and there&#x27;s some problems with that talk.  First and foremost, the modules he&#x27;s referring to are either not core, or deprecated (CGI).  It&#x27;s really more a case of poor programmer behavior and slightly confusing behavior in a once core (and <i>long</i> known to be problematic and avoided) recently (at the time) deprecated core module than a language problem.<p>1: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=8813479" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=8813479</a>