I don't read that as being a "subtle dig at PHP". There are many very legitimate reasons for a developer, especially one well-versed in many languages, to not want to use PHP.
And his position is very reasonable. He doesn't seem to care if you use PHP, if it works for you. But he doesn't like using PHP himself, for whatever reason(s), and wishes to not use it. His abstinence from PHP doesn't prevent or affect your (or anyone else's) use of it.
And his position is very reasonable. He doesn't seem to care if you use PHP, if it works for you. But he doesn't like using PHP himself, for whatever reason(s), and wishes to not use it. His abstinence from PHP doesn't prevent or affect your (or anyone else's) use of it.