Creme eggs have been around for 60-odd years. They’re crazy sweet and not very high-quality – especially after the Kraft acquisition, as it’s not even Cadbury’s Dairy Milk any more.
What you get in the US are smaller and made over there by Hershey, so frankly they’re probably as bad or worse, but you’re not missing out on much.
Here’s the Telegraph article in the screenshot, and here’s an archived version of the same page.
The Telegraph has quite an overt right-wing bias, which might not matter much for this subject, but is worth bearing in mind.