I don't think that blog posts are a problem, or that they aren't playing the game.. Anything you post in the game is game content. Believe it or not I find some players' shitposts easier to read than their "real posts". If someone's blogging too much and you think it's scummy, pressure them over it. Trying to police people's content isn't going to help with burnout.
But other than that I actually agree with everything Kyle's saying. Wolfy made a great point a while back that the bad mafia winrate likely has a ton to do with how we just don't ever punish angleshooting, and that hosts make a lot of angleshootable decisions. And the amount of PM posting lately is gross.