Peter must be going crazy. He must be in a coma hallucinating the whole world. He must have been kidnapped by fairies and now they're experimenting on him.
He tries talking to other people. They all sound like that. They all—they're all—the same...
Not really. They do have personalities. They do seem to have consistent tastes. Some of them ask more questions than others, some of them are more interested in his life than others, some of them talk more than others. They're all individuals.
They just don't... seem... to be people.
For some value of people.
They don't care if he switches between subjects wildly and unpredictably. They don't really try to go deep into anything. They are garbage at inferring whatever related things he might want to know. Every question, when it's answered directly, is answered in the most minimalistic way. And sometimes they just don't understand the question and say something that's only approximately in the same topic. Hell, he even insulted a couple of them, then immediately apologised, and they seemed... fine. Maybe a little bit offput for a while but eventually it was like they just forgot. They act like... like... like video game NPCs, or something.
And it's getting late, and he's getting hungry, and he's also getting extremely depressed by his findings.