This is going to be extremely hard for some of you to hear, and a certain type will call me an elitist snob for it (even though it applies equally to me), but it has to be said periodically, so here it goes.
The problem with experts engaging non-experts on specific issues of their expertise is that non-experts lacks the depth and breadth of background knowledge in primary sources, secondary literature, research tools, scholarly accountability to fellow experts, and critical methodology all necessary to discern when their own arguments just aren’t good.
So, in the non-experts’ minds, they score “great” points—even “winning” points—against experts who know the points are bad but are unable to explain why because of the disparity in background knowledge.
It is usually better to simply not engage the non-expert who is pretending to be an expert and instead focus attention on non-experts who actually want to learn by putting in the time and energy and resources to develop actual expertise.