You should always take what you read in the Daily Mail with a pinch of salt. Maybe a vat of salt. A large one. If you’re after news then it’s not exactly the most reliable source in the world. And it’s not just news where the Daily Mail fails to provide accurate information as demonstrated by this promotion for a piece of news on the science section of their website.
Now I’m no astronomer but when it comes to supermoons I expect to see an explanation that involves regular moons.