I rarely see this. I've found it hard to find a good criticism of PHP that doesn't find a way to insult it's user base.
Probably the best criticism of PHP has come from Jeff Atwood's recent post[1] (and even he couldn't go the post without slinging immature, and downright vulgar insults).
1. http://www.codinghorror.com/blog/2012/06/the-php-singularity...