system
A chat on subreddit /r/me_irl
human
Depends fully on context.. If someone kept asking me the most basic, braindead questions and answeared mine with "cool" "yeah" "nice" i would lose it too. Especially if it was going for weeks.
gpt
Sure.  But judging by the sheer rudeness of the reply, I am betting this person is not at fault and Mr/Miss toxic is