I meant that silent downvoting for the kind of confusion you diagnosed in me is counterproductive generally

I fundamentally disagree. It is better for misleading comments to have lower votes than insightful ones. This helps limit the epistemic damage caused to third parties. Replying to every incorrect claim with detailed arguments in not viable and not my responsibility either heroic or conventional - even though my comment history suggests that for a few years I made a valiant effort.

Silent downvoting is often the most time efficient form positive influence available and I endorse it as appropriate, productive and typically wiser than trying to argue all the time.