Seems only the smartest ones like myself and @SmallPond are here.
I think you nailed it that voat is more venting than discussion. It is aligned more with desires and fantasy than reality. When groups grow to the size that the individual can no longer see or feel the effect of their efforts on the whole the focus shifts to "big" ideas. These ideas are gross simplifications like Us vs. Them and do not foster discussion only fellation. I'm a firm believer that communication is rooted in invested connection. You can't have that when group identity>individual identity.
I think there are some smart people over there, however many suffer from cognitive biases (confirmation bias, backfire effect, bandwagon effect, false consensus, authority bias, etc..). Over all it is a very emotional group, if comes off more as a place to vent and place blame than as a forum for speech and discussion. I would imagine levels of depression, anxiety, and autistic tendencies among the population are pretty high.