It's worse than that, it's feigned surprise. "I disagree" is at least intellectually honest, "Huh?" is pretending that the position is so far off that they couldn't even understand it.
I learned the term "feigned surprise" from Recurse Center's social rules[1]. It's related to, but not exactly the same as, that well-known XKCD about "today's 10000", too[2].
I learned the term "feigned surprise" from Recurse Center's social rules[1]. It's related to, but not exactly the same as, that well-known XKCD about "today's 10000", too[2].
[1] https://www.recurse.com/social-rules
[2] https://xkcd.com/1053/