As the old joke goes, "I am the grammarian about whom your mother warned you"

I believe that is the same everywhere.

I travel quite a bit, and I am working hard to become fluent in Spanish. I have noticed that I often have a better understanding of Spanish grammar then native speakers (which doesn't at all mean I speak the language better). It just means that I studied textbooks to learn Spanish grammar instead of learning it naturally through normal use.

Likewise I never knew what a phrasal verb was until I started helping people learn English.

Language is a tool for communication. People use it in a way that works for them. There is no need for pedantry in every day speech. In fact, if you speak with perfect grammatical correctness in informal speech, you risk sounding like an ass.

As the old joke goes, "I am the grammarian about whom your mother warned you"