Half in the Bag only really exists because the Plinkett reviews created an audience so big that to not follow it up with something more easily monetized would be foolish. It definitely wasn't done because there's a real passion for film criticism there. Because there pretty obviously isn't. It's done because a whole lot of people liked sharing those Star Wars reviews, and you can monetize those people.
They're not really good at being film critics, and they don't want to be, obviously, but they also don't need to be, because they know they have a fanbase that doesn't really care how insightful they are. They want punchlines, they want talking points, and they want the facsimile of friendship and camaraderie in easily streamable chunks. It's basically what's been keeping Kevin Smith alive for the last 20 years.
Sure, they'd likely rather be making their own movies, like they were trying to do before the Plinkett shit took off. But this is what's working, and this is the beast that is willing to be fed, so they're gonna feed him. Ride the motherfucker til the wheels fall off. Sometimes good stuff comes out. Sometimes the ass is half full.
And I wouldn't be surprised if, on some level, all of that had something to do with their reaction to the narrative surrounding Boyhood.