You know, I think that the job they do is pretty important, if also kind of far from the idealized view of the media as this almost omniscient gatekeeper institution.
If someone wants to pour over tens of thousands of press releases, do some light fact-checking on them, discard the ones that are just obviously crazy or unimportant, and sort them by topic, maybe get a bit of context on them or flesh them out a little, then that strikes me as pretty useful. Certainly I don't want to deal with a raw torrent of press releases. I want someone to filter them for me, if even lightly.
If the end result is not a one-stop shop for all the truth and accuracy in the world, well, that's unfortunate, but it also strikes me as life. It'd be great if someone could just synthesize raw, objective truth out of all that data, but I don't believe that's possible. Given that it's not possible, I won't let the perfect be the enemy of the good.
And since those institutions-with-agendas are pushing their agendas in other ways than just through the media, we should probably try to address that problem at the root instead of just blaming journalists.