The way this sounds is that you are more concerned about politics as in people who take party positions and may feel excluded as a group when the majority of the community takes a different position. This is a slightly different issue i.e. party politics, and I think it is fine/a good thing, but it is also important to distinguish the two. This should essentially be under the same umbrella as personal attacks, as they are essentially the same thing.
I see this great move as a way of the community lifting its head out of a sandy quagmire to glance at the shining beacon, the vision on the hill, the where we want to be, unsullied by political nausea. Sure, in a week we can get back into the grim reality, the tech-noir crapsack future, but perhaps for one week we can focus on a positive future and its soaring aspirations. Go Dang!
The vision of where we want to be is the central political debate of all time, to which all other political discussions are peripheral appendages. So, no, banning political discussion doesn't let us focus on that, it prohibits even considering it.