There are plenty of other people who do all of the things you seem to like about those two, but who are also good at journalism and haven't otherwise fallen victim to their own greed through moral turpitude.
And you may think representative democracy doesn't work, but I think you need to understand that it's more or less all the West has going for it. If you throw out representation, you throw out more or less every modern democracy in the world, and I'm personally not willing to do that. The alternatives are ghoulish and chilling to think about.
I'm not suggesting removing representative democracy, you're creating a strawman there, I'm saying that starting at the assumption that everyone is a moron that must have their information stream managed is bad for democracy; and that your average representative has more blind spots than we care to admit.
Besides, frankly your average representative doesn't actually do that much research into most topics, they either take the party line or do whatever their biggest donors ask them to do. So in essence you're not generally represented by Jim Bob, you're represented by oil companies or insurance companies or hedge funds etc..