Didn't know that. I stopped going because I thought it got a bit mean at times.
She does make a point of only using professional cakes. So she's not just making fun of amateurs trying their best in their home kitchens, it's people who do this for a living and should be able to do better!
The Sunday Sweets are truly spectacular. A lot of the cakes she posts on her FB feed are amateur efforts that she posts because she likes them, not as wrecks.