Well, with quotes like "it is simply not a language designed for the sorts of workloads that Java and .NET are" I'm not sure of the author's technical level.
Also, his comparison of Zend's "folks" (which ones? Founders? Execs? Sales people?) to "gestapo officer looking for a spy: "What? Who said that? Who said it was slow? Tell us their name!"" isn't too apt - they'd probably like to know who complained about PHP performance, so they can offer them their products/services, rather than silence them somehow.
Also, his comparison of Zend's "folks" (which ones? Founders? Execs? Sales people?) to "gestapo officer looking for a spy: "What? Who said that? Who said it was slow? Tell us their name!"" isn't too apt - they'd probably like to know who complained about PHP performance, so they can offer them their products/services, rather than silence them somehow.