Your comment is slightly off-the-mark as his comment wasn't merely about a festival, but also about his opinion on Portugals drug policy. As your comment implies that you aren't familiar with said policy, you may wish to recap Portugals efforts in drug decriminalization:

http://www.spiegel.de/international/europe/evaluating-drug-d...

http://en.wikipedia.org/wiki/Drug_policy_of_Portugal

While it is apparently hard to say how effective these efforts were, it is quite easy to see that the neo-prohibitionists worst nightsmares have yet to happene in Portugal.