I think the only reason PHP is still relevant is because it's so damn accessible (kinda like w3schools), every shared hosting provider under the sun gives you apache+php, and when you're starting learning web programming shared providing is the way to go.
Why do you say php and Javascript suffer from the same ailments? They suffer from a few of the same ailments, like a crappy/confusing stdlib (although you don't see mysql_real_escape_string in javascript's API) and funky invisible type coercions. Lack of true OOP in javascript, though confusing to beginners, is a design feature as far as I'm concerned, prototyping gives you the tools to implement OOP however you like. But javascript has had a known design pattern from the beginning, which is very powerful and useful once you learn it. I strongly doubt a (another?) phplint at this point would change anything.
As for the "anecdotally" slide, I read the last statement as a conclusion of the previous stats, which didn't make any sense to me. Either I am completely misreading it or you are taking the phrase "anecdotally" far too literally.