This is the double-edged sword of plurality. But consider that: if you were pro-transgender rights in the 60s there were no way to sort you from the crazies: you would have been advocating as a choice what was officially a mental disease. They still existed and in 2017 their voices seem much more acceptable.
Finding the voice of 2040's progressives comes at the cost of letting the conspiracy theorist and the lizxardmen spotters have a say too.
And frankly, I'm far less worried about people promoting unfashionable views (who, whether trans activists or "911 truthers" tend to be pretty self-motivated anyway) and far more worried about the amount of people that want to spend their life writing generic rants about whatever has annoyed them most recently who could really use a thin veneer of credibility and government-subsidised libel lawyer...
I mean, on the one hand it's certain that there are people who will happily spend their days writing conspiracy theories or lies about certain minority groups without any financial incentive to do so, and I'd rather this didn't get money from my taxes and a government stamp of approval that such garbage is actually "information". On the other hand, I don't really want a situation where it's really easy for "independent" journalists to get distribution and an income stream, but only if they write stuff the government approves of.