You can learn how to be better understood as a native speaker without having to go abroad or even speak to a lot of people using English as a second language. In the UK, live in a city like Birmingham, for instance, with a strong local accent and even, in some parts like the Black Country, a unique syntax, e.g. "How am ya?". Now go live for a while in, for the sake of argument, Glasgow, with their own particular patois and accent.

Why does this article make me think the problem is perhaps mainly with those native English speakers who haven't been exposed much to their own language as it's spoken in the regions?