I've found that 100/100 people just get offended and/or pissed and retreat to their amygdala if you point out a fallacy in their logic. It certainly doesn't help that many people pointing out logical fallacies are in fact wrong (and fallacious) themselves (the "you're using a slippery slope fallacy" for example is fallaciously used all over the place).

I'm becoming increasingly convinced that good faith engagement is essentially impossible. The only reason I engage at all anymore is for the third party that might be an honest seeker who may stumble upon the thread at some point in the future.