Ok, I might as well go first: I wish I could draw. Not at the level where I could make photorealistic portraits, but I’ve always been envious of those who are able to scetch something together in a few minutes that perfectly captures what they want to convey. Sometimes words aren’t enough to express what I want to say, and for those situations I would love to have a simple drawing do the talking for me.
Being able to detect logical fallacies will help a lot, but it’s not a perfect solution either. If an argument follows a flawed logic, it might also have factual issues as well. The thing is, there are exceptions.
Some people actually have something factual to say, but they mess up the wording and end up saying something paradoxical. Someone trained in detecting logical fallacies might dismiss the argument as complete nonsense, even though the core of the argument was true.
Also, the reverse is true. If you know what you’re doing, you can craft a beautiful and logical argument that isn’t actually grounded in reality. Someone not trained to wield this sword, may be defenseless against it.
These kinds of arguing tools are definitely useful, but they don’t always lead to the right answer. Mistakes happen on both sides of the debate.