As for the people using the language, I have inherited a few PHP projects, and without exception, they are a mess. The code quality and readability is usually garbage, simple stuff like tabbing and consistent variable names. SQL Injection vulnerabilities, and XSS issues abound.
Many inexperienced developers use PHP and make a mess. But try to remember that there are also many brilliant engineers at Facebook and other companies using PHP and doing amazing things with it.
You may also appreciate this viewpoint: https://blog.codinghorror.com/php-sucks-but-it-doesnt-matter...
Cosmopolitanism takes a bigger effort, and it needs a more general confidence in one's abilities. It's easier to focus on building a tribe.
Seeing that is inherently tied with Russia, the Russian mindset, and Russian tradition, then of course yes.
(But I get your point).
It's like getting upset that Dostoyevsky wrote _Crime and Punishment_ in Russian. The language is irrelevant - he got his point across regardless. Would the novel be any less important and valuable if it was written in German, or Portuguese, Latin, or Mandarin? Of course not.