If the hosting is anonymous and censorship-resistant then you'll get every type of content, but for anybody to use it they would first have to find it.
Then you have a slew of independent discoverability portals. Some are created for child pornography, so the FBI hacks into them and then uses them to arrest everybody there. Others are created to replace Tumblr and YouTube and refuse to link to child pornography, so child pornographers have no reason to go there and the people disgusted by child pornography can safely use them.
But setting up a discoverability portal is a lot less expensive than setting up a hosting service (because a link uses much less bandwidth than high quality video), so there should be more competition, and in particular it should still be difficult to censor anything that has more than a modest amount of popular support.
For convenience, we need m3u lists of video-chunks and a simple player shipped, since browsers cannot play m3u out of the box.