I don't think the pope's statement is merely just a bunch of empty words.
While my opinion probably isn't a very popular one here, I think if one's religious texts state that something is a sin, that people shouldn't just change their minds simply to gain points in the world's (or at least Western nations) popular opinion. While I am not a Christian, and have never read the Bible in full, I know there are sections that indicate that homosexual acts are sinful, I also know that some people read other parts of the Bible as saying it is okay. Maybe in time the Catholic church will agree with the more LGBT-friendly interpretations, but for now, while they still read it as being a sin, saying that simply being homosexual isn't sinful and that the we're not the ones to judge gays is a step in the right direction. [especially since in the grand scheme of things, it wasn't very long ago where people said just being gay (even without acts) was a sin and an abomination in God's eyes]
I think this is a particularly important message in areas of the world where people actively hunt down gays and lesbians in order to publically ostracize them, and even murder them. Some of these places are regions where the Catholic church has more clout in the minds of ordinary citizens than in Western nations. The world has a problem where Christian religious extremists go into "developing nations" on evangelical missions and tell citizens there that homosexuals are going to hell, that gays are trying to infect the minds of their children and are solely responsible for HIV/AIDS, etc. While I don't expect anything to change soon, I hope the message of "who am I to judge?" [coming from the most influential man in Roman Catholicism] will spread towards other Christians.
I fine with people thinking I am going to hell if I have homosexual sex, just as long as they're not discriminating against me or trying to kill me. People think a lot of actions are sins but don't necessarily discriminate or disrespect people who do those acts.
[side note, I do find this pope more refreshing for other reasons as well as his above statement. . . ]