Pushing the Xfinity name was trying to distance their newer digital offerings from the tainted name of Comcast (when you hear that name when talking about cable, the reaction generally isn't good), but that didn't appear to work out very well so they've seemingly gone at it halfhearted these days. I have a feeling they'll start going back to just Comcast with Xfinity being a product brand.
That is basically to say I'm fine with an NBC/Comcast logo in the parks, especially if it's the turkey logo.