

Except literally not the echo chamber. The intent is to get the message to those not yet brainwashed so they don’t end up in an echo chamber. You can still directly and genuinely rebut their dumbassery. That’s not “bad faith”. The fact that I know the idiot won’t be swayed by the truth, doesn’t change the fact it’s the truth. Addressing idiotic points explicitly is not bad faith.
From my example, the part where they claim to have not made the argument is what I’d consider gaslighting. My understanding of gaslighting is any attempt to make someone question reality. So the reality is they definitely said one thing. When that goes wrong, they claim to have never said it. It’s a tool of someone who manipulates.