According to 80-20 rule the minority of people will do most of uploading. When I was on Voat, I sometimes found a lot of interesting content fit for one subverse, and could not upload it. As I did not want to wait for an hour I either posted it on sub that did not quite fit, or gave up.
These rules have a side effect of lot of good content not being posted. And we need good content to get a good userbase!
I fully agree with this. At the moment we barely have any restrictions in place.. the cost of this is the need for more moderation/administration activity to manually combat spam (which is also good to prevent all the admins goin MIA like in voat).