Should one make an Haetz or Shehakol when eating chocolate?
The bracha on chocolate is Haetz
If I may ask further, at what point does an item transition from source to processed (haetz/ha’adama to shehakol)?
As you can understand the halachos of bracha are varied and many. So keep asking specific questions. But to clarify, chocolate is not Haetz because of the reason you stated. Rather the only way to eat it is post processing. Similar to olives which are inedible with our processing.