Those are not equivalent, at all. Bird share genetics with us and all animals. Mathematical models do not. If I write “I died here” on a bathroom stall, no one actually died. How is this so hard to understand?
The LLM model of pain used here is just a name. It is the equivalent of writting “if ‘pain’ > 0 then ‘suffering’= true” in a programming language. Numbers have no feelings.