The group of people that is pushing the "fake news" line definitely wants that. It is absolutely dependent upon lying to maintain power.
Someone is presumably making a handsome living by lying for the rich, so at least one person wants this. And there are people paying for this service, so clearly there are people who want to live in this kind of world.
It doesn't matter that this problem has existed forever. So has murder. Are you arguing that we shouldn't care about people murdering each other because it's a timeless problem? I assume no.
It's not tricky at all when someone knowingly, intentionally pushes fake content at scale to sway public opinion. That's an unconscionable act with very clear and dark intentions. That shouldn't be "tricky" to assess, because we know very clearly that what they are doing is absolutely, unequivocally, wrong.
I don't think anyone wants that, but this has been the case since the invention of the printing press and probably longer. It also gets really tricky when what is a lie vs. what is truth is not obvious.