I've noticed one thing about Americans, and it's that you're bad at differentiating between non-North American English accents. The rest of us Anglophones easily know the difference between all of our respective accents. The only ones we struggle with are American and Canadian, we can't tell the difference between them. We can even tell apart Jamaican and Barbadian or Guyanese and Trinidadian, but American and Canadian sound exactly the same to us.
But in any case, that man is obviously South African. Listen to how his vowel sounds have all shifted from English, as in British English, or real English.
I'll do a transcript for you. He says:
Look at all that vowel shifting. Those aren't spelling mistakes. I'm not a retard. I can spell. Im just writing down the vowels exactly as he pronounces them.
Vowel shifting is unique to the Scottish, South African/Zimbabwean, and New Zealander accents. It isn't a feature of the Australian, English, Irish, or Welsh accents.