As others have said... I see lots of people talking about army lists and effectiveness of points costs in some FB groups, they get many answers because other players using the same rules like to share the results of their own choices; but apparently that's for their own games at home or at their gaming club, not for tournaments.
Whereas there's not much need to talk online about RPG-minded wargames (which I do). You post some AARs when you take the time to write them, and get a few comments, you read other people's AARs, and there are discussions about precise points between a few people who are working on the ruleset or improving it, and occasional questions from other people who want to try and run a game; the vast majority of other gamers do not notice it. And I certainly post more about other matters (terrain, miniatures, etc.) than about the game itself.