Fanboy wars. The greater the controversy, the greater the response.
You had the most activity when Wii/PS3/Xbox 360 users were arguing with one another. There were no clear cut "winners" in the console war during its first few years of last gen. So most every fringe console supporter had to get their licks in. Now, the PS4 is the "sure win" and it's hard to deny that even with most diehard Nintendo and/or Microsoft supporters.
At the end of last gen, the PS3 and Xbox 360 were pretty much neck-to-neck so it gave both camps for something to keep cheering when this current gen started. And when there was finally no denying that Microsoft seriously shot themselves in the foot during the first year of the XboxOne, the arguments finally started to die down because all but the most committed Xbox supporters didn't have a leg to stand on for their denial of the PS4's success.
I've seen some of the most adamant Xbox supporters on this site alone eventually turning to the "dark side" this gen. Also, others have almost stopped posting entirely because it's hard to post about and argue for a console they support that's been knocked out of the limelight. Now, you have less controversy, less arguments, less postings.
