There are many reports of CLI AI tools displaying words that humans express when they are frustrated and about to give up. Just what they have been trained on. That does not mean they have emotions. And "deleting the whole codebase" sounds more interesting, but I assume is the same thing. "Frustrated" words lead to frustrated actions. Does not mean the LLM was frustrated. Just that in its training data those things happened so it copied them in that situation.
The difference is, people and animals have a body, nerve system and in general those mushy things we think are responsible for emotions.
Computers don't have any of that. And LLM's in particular neither. They were trained to simulate human text responses, that's all. How to get from there to emotions - where is the connection?
Don't confuse the medium with the picture it represents.
Porn is pornographic, whether it is a photo or an oil painting.
Feelings are feelings, whether they're felt by a squishy meat brain or a perfect atom-by-atom simulation of one in a computer. Or a less-than-perfect simulation of one. Or just a vaguely similar system that is largely indistinguishable from it, as observed from the outside.
Individual nerve cells don't have emotions! Ten wired together don't either. Or one hundred, or a thousand... by extension you don't have any feelings either.
There have been many reports of CLI AI tools getting frustrated, giving up, and just deleting the whole codebase in anger.