Shipwreck gave a strong pointer to a part of the problem right there after the question and Cheapy just skips right past it.
The CAGcast is pretty pro-Xbox. That puts PlayStation fans on edge.
And calling out PS fans as being childish seems crazy given the episode with Wombat being Xbox gamer of the week and getting Xbox "fans" crapping all over him to a level that it becomes gaming news. There are babies on both sides, Sony didn't corner the market.
Now, as to why PS fanbois are aggressive right now, it's probably because they finally have some ammunition. People slagged the PS3 for years, with crummy ports and such and what's a PlayStation fan to do? It's hard to argue the point when someone says the PS3 version of Bayonetta is junk. So the PS fans are all raring to go and when they finally have some ammo, they're letting loose.
In addition, I think the PS people see a crack in the defenses and now want to put a heavy offensive on. When PSN went down for a month, did the MS fanbois hold back or did they go on the offensive? Well, now that MS is stumbling, things are just reversed.
And I think one thing that's feeding the fire is CheapyD being so aggressively dismissive of the spec difference between PS4 and XBOne. He says that does it really matter, don't you want to see the games first? Well Cheapy, let me ask you. How many times have you said you'd be getting the PCPCPC version of a game because it'll look better? Did you wait to play it yourself first? Or did you assume that better hardware means the game will look better? You assumed the PC version would look better. Now, when there is a measurable difference between XBox and PS4, you just say, well, don't read too much into it, there's more to the story.
So PS fanbois see Cheapy as a leader in the group being dismissive of the PS4 advantage and they begin to call out Cheapy for it. Is it the right thing to do? No. But that's what's happening, and it might be somewhat less of a blowup if Cheapy weren't so vocal about wanting to use the machine with better hardware (PCPCPC) when making his own buying decisions.
And finally, the reason Cheapy can slag Kinect and not get much of a response is because motion gamers don't represent the hardcore "in your face" type of fanboi that likes to get into internet arguments. Not on Xbox, not on PS3. If Cheapy slagged PSEye, do you think he'd get a lot of kickback from PS fans? Not hardly.
I've learned to live with the Xbox leaning of the CAGcast, it's not entirely without reason. But please, going forward, at least try to understand that that is part of the reason you see an opposition from the PS fanbois.
And on other news, my local Target has had PS4 presence for weeks. It's just set of pegs for games (not the preorder cards) with the PS4 placard behind it. It was stocked with PS3 games for a long time, but surely it has some PS4 ones now. There's no endcap, but then again there's no XBOne endcap either. Although the XBOne games rack is more visible than the PS4 one by any measure. I'm not sure why this is.
For the record, I don't think Cheapy is some kind of shill because he owns MS stock.