Can you point to any specific answer? I clicked through a couple of the highest voted and a couple of most recent answers and they all look fine to me.
Funny thing, besides the curtness, is that he's most likely not even technically correct, since performance issues on web sites are rarely due to the choice of CMS or in its code.
Also the pompous "design patterns" comment; a lot (30% ?) of web sites in the Internet run on spaghetti code (Wordpress, Drupal) and many are fine, if I had to I'd bet the CMS and its code is not the problem.