The problem is some of these debates have consequences that you would be forced to deal with (choice of language, framework, architecture etc.) and needless pedantry can be a huge blocker to adopting a better solution to the requirement at hand. At that point, either you can "exit" the debate and deal with the choices, or you can "exit" the situation in search of better co-workers. Both of them have real costs to you (which are not your doing).
I don't know what kind of life skills would help there. If you have any thoughts, I am all ears.
The kind of situation you describe happens... sometimes. Most of the time when you run into this kind of behavior, though, it's not in a situation with real consequences. It's somewhere like HN. (Have I seen this here? Yes. Have I done it here? Let's just let that question pass, shall we?)
What do you do then? Call them on it, for the sake of the rest of the people in the discussion? Ignore it (don't feed the troll)? Call them on it once, then just walk away?
What do you do when you are the one doing it, and someone calls you on it? Do you double down, or do you realize that you were being a pedantic jerk, and stop? Maybe even apologize?
And how do you tell where the line is between "valid nuance" and "pedantic irrelevance"?
There's plenty of room for life skills here. They may not help you in every instance of this kind of behavior, but they can help in many of them.
I don't know what kind of life skills would help there. If you have any thoughts, I am all ears.