I 100% agree with this. I'm a Filipino and every time I speak with native English speakers, there's this few seconds after they speak that I have to repeat what they said in my mind slowly. My friends from other SEA countries say this as well. Most Filipinos who only speak English are the most confusing people that I've spoken with. They use big words when speaking that not a lot of us know, and they're proud of it because they feel superior.