Total nonsense. Of course a modern medium or full format camera outperforms any phone on technical aspects.
What is described is those article is the same as a normal raw that DLSR have been doing for decades. Adding the word "expert" or "apple" in front of the name doesn't make your RAW files magically better.
The only advantage for the smartphone here is that it's more user-friendly to edit the RAW files directly on the phone in one click compared to importing your photos in a software like Photoshop Lightroom
Understanding Apple ProRAW
https://petapixel.com/2020/12/21/understanding-apple-proraw/
Excerpt:
ProRAW has one more surprise up its sleeve. A few years ago, Apple began using neural networks to detect interesting parts of an image, such as eyes and hair. Apple uses this to, say, add sharpening to only clouds in the sky. Sharping faces would be quite unflattering.
ProRAW files contain these maps!
All cameras (compact to SLR does post processing) other than for RAW format. And infact even for RAW format SLR cannot beat modern flagship phones [1] [2].
[1] Apple ProRAW https://support.apple.com/en-in/guide/iphone/iphae1e882a3/io...
[2] Samsung's 'Expert RAW' https://www.androidauthority.com/how-to-use-samsung-expert-r...