Why would you even talk about it if you know nothing about it? I believe that's a problem for people who don't know what they are discussing. They push themselves to let others see that they are knowledgeable about something, but when it comes to application, they don't know what they are doing.
It's for fulfill gambling quota post, you know many gambling signature campaigns have requirement to post in gambling board for x posts in a week to eligible for the reward. Although @OP stated a good point that people should become gambler if they want to talk about gambling, but this raise a question whether @OP is a gambler or not since he mostly talk about general or common thing about gambling instead of discussing the players/teams/sports or technicals.