I think reviewers here (and many on YouTube) totally fail to understand Neel's sharp and witty short.
First, it's not meant to be "realistic", any more than 1984 or The Hunger Games are meant to be "realistic". It's a dystopian satire. Good satires make fun of extreme versions of real-world ideas and institutions. In fact, the 1+1=2 math problem is an obvious reference to Orwell.
Second, since he's attacking the extremes of identity politics today, not movements for racial and sexual equality and civil rights from the 1960s and 1970s, he would NOT be kicked out of Australia if political correctness ended. Comparing civil rights to political correctness is like comparing house cats to tigers: one is nice (though it has claws and meows a lot), one is a ferocious and dangerous beast. In fact, the tendencies that the video satirizes are potentially totalitarian in themselves.
A must viewing for college and university students across the Western world. It's funny that this video has only attracted three comments on IMDb, two of them in incomplete sentences and full of language errors: so much for clear, rational debate.