"How does not being able to die work? Or was it only technical immortality, so that they could still be killed? And if so, how did their bodies withstand ageing? Did they completely exchange all cells on a regular basis?"

He just echoes that shapechanging powerful potentially dangerous beings are usually nice if you are on okay terms with them, so even though he's not one of them, he sees no reason to turn down food that is pretty tasty.

But at the same time that statement just posed a lot of curious questions.