What you describe can be called healthy critical thinking. The case I mentioned was different, I just described it poorly due to my limited English profficienc

What you describe can be called healthy critical thinking. The case I mentioned was different, I just described it poorly due to my limited English profficiency and typing on mobile, so you and others suspect the opponent meant reasonable doubts. Anyways, logical fallacies are ubiquitous. And of the level of the simplest Aristotelian logic, not even requiring first order logic. An automated tool capturing may probably be useful. Arguments similar to "bananas are yellow, so if I see something yellow that's a banana" are quite often in politics. The paper cites some previous studies of fallacies in an online forum and in argumentative essays.