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..
Joe Rogan, Matt Taibbi, Glenn Greenwald; these are the cancers, not the concept of representative democracy. Attempting to spread lies and unconsidered science on other people's platforms, and then pretending like they're entitled to those platforms is arrogant, completely wrong, and degrades what it means to own property. If you have to let people use your services, your property is no longer your own; it is owned by the government, it is nationalized.
I want private companies to be able to decide how their platforms get used. If Spotify doesn't want to deplatform Joe Rogan, that's fine, but they should deal with the consequences, which is also fine.