The author is complaining about lack of vision, leadership and regulations. And most of us can perfectly understand that, except: those are exactly the things that set PHP apart from most other major open source projects. It is by far the most anarchic and disorganized major OSS project and yet it still thrives . It still moves forward, it still gets better. Yes, it's design foundations as a language are not particul…
Also i can imagine two major reasons PHP is not forked:
1) You have a small committed developerbase which is too much invested in the ecosystem (Zend and others).
2) Every other user (aka webdeveloper and PHP developers that want a major change) in the ecosystem may rather move on to another language then try to fork it. In the end: What what you do with a PHP fork that doesn't move in the direction of Ruby, Python and Co.?