人机

In gaming chat 人机 has two flavors: (1) neutral noun for bot opponents (新手打人机), (2) light insult/trash-talk meaning 'you play like a bot' — moderate rudeness, common between friends but rude to strangers. The formal academic sense (人机交互 = HCI) is unrelated in tone.

culture

Standard mode in MOBAs (LoL, 王者荣耀): 人机模式 (bot mode) for practice. Calling someone 人机 in 王者 ranked is the kind of casual insult that gets you reported but rarely punished.