What specifically do you suggest? If you're being pedantic and snipey, you're not engaging in good faith. If you disagree with the general argument, be honest a

What specifically do you suggest? If you're being pedantic and snipey, you're not engaging in good faith. If you disagree with the general argument, be honest and say so. If you're looking to have a constructive discussion, help move the conversation forward, which includes showing you understand what they intend to say, even if you disagree or they're not expressing themselves as clearly as you'd prefer. Understandably you can't read their mind, but you can speculate charitably. If you don't think they're discussing in good faith, you can choose to civilly explain why that's so, or choose not to comment at all if you don't think there's a constructive way forward. For controversial topics, it's even more important to do this as it's that much easier for discussion to devolve into a flamewar.