Despite Pope Francis' popularity, there are always going to be some naysayers. I've heard in his case it's some of the hardcore, old-school Catholics who think he's destroying the church.
There's another group who say he's really no different from Benedict; he's just more media savvy and will manipulate the press into making himself look progressive while never changing anything.
And then there's yet another group going around posting pictures of Francis picking his nose. (Yes, really!)