I'm not saying you can't criticize Joomla! Why should I? Joomla! isn't perfect. Joomla! cannot be perfect because despite the simple fact that nothing can really be perfect, Joomla! is a piece of software and I think everyone knows that software is never bug-free.

Joomla! is a CMS designed to be used for many purposes, and as such, has to satisfy a wide number of people. This is a task that is next to impossible.

That means there are, and always will be, a big number of people that will never be happy using Joomla!
Wordpress and Drupal are playing in the same league, and I'm quite sure that there are a lot of people that are not happy with them either.