What
@No Ta Doctor posted!
And what this (American!) guy says here...
I will drop the subject now though before I get banished to the politics forum!
I didn't see the relevance of anything in his video to the varieties of English that exist around the world, unless you were talking about his sponsor, Lingopie. Even then...
With over 1.8 billion speakers of English worldwide, there are bound to exist different versions. American English is distinct from British English in quite obvious ways and for obvious reasons. And within America there's also (I hope you're sitting down) AAVE, which is African American Vernacular English.
Then there's Canadian, Australian, New Zealand, Indian, and Caribbean varieties of English to name a few more.
Languages evolve, and English is particularly good at it.