I don’t understand Nigel Farage. Is the problem that he’s too British to get rid of, and they have to let him keep doing stuff & talking about him on the BBC after years of being extremely obviously evil and bad and wrong and also unpleasant? Also is he Australian

No, Farage isn’t Australian, though I can see why you might think he is. The accent is South London - not Cockney, which can be mistaken for Australian. No one with a trained ear would describe Farage as well-spoken: he sounds like a barrow boy, which, as a non-graduate City trader, is what he was.