If the government does it its propaganda. I don't see how that's dated. Unless you count misuse of the term as valid. People misuse propaganda to mean media describing a narrative they don't like all the time. But those people are wrong and shouldn't be encouraged.

Third parties working on behalf of a government to spread their message do count as Propaganda.

The difficult part is telling apart propaganda from organic content. People have this idea of propaganda being a bunch of communists making posters with slogans or something. But that is what's really dated. How do you know a group isn't being funded by a government or affiliated with them? Sometimes its easy to tell. Like with Russia Today. They have the veneer of a news outlet but they are state owned. But when a lot of people get their news from social media its impossible to know who is really on the other side.