Wouldn't reddit be considered big and diverse? You still have T_D and mensrights and a bunch of other conservative subs. True, on a sub by sub basis, the mods and voters tend to enforce one ethos, but there are a few subs with substantial left and right participation. Politicaldiscussion comes to mind.
The subs that are diverse are small enough that they never get seen by the majority of users. If they were large enough to be seen by the majority then they would cease to be diverse. The Reddit approach of subverses is the right idea, however when a subverse reaches a certain size it creates users akin to cultists. These users then infect other subverses like pathogens. The process is remarkably similar to how viruses operate, invading the host cell and producing copies of the virus before the cell bursts and the virus invades neighboring cells. Diverse ideas are not capable of reproduction at the rate of viral ideas. A few viral ideas, the simpler the better, prove to be effective at rapidly reproducing within the current environment. They sprout up like weeds and outcompete deep rooted and slow reproducing ideas. When you reach a critical mass of weeds you lose another space to the better adapted invasive species.
Add me to the no pile. I still lurk voat, but no longer post. I was over participating before the Qtards showed up. There were plenty of ignorant fucks ruining voat before the Qtards. The only difference is they didn't have a label. Basically any "group" that migrated came with very tribal minded members. These were people who wanted to turn voat into wherever they came from.
I think the existence of a place that pushes the inverse side of the accepted narrative is important. There's never going to be an ecosystem on the internet that is large and diverse of opinions and beliefs. You can either have small and diverse or large and uniform. Voat is now too big to support oppositional views. Of course the alternatives to voat, pushing the other side of the narrative, literally created the migration that grew voat to the size where the scope of allowable content shrinks.
I believe the bigger an internet platform becomes the smaller the tolerated amount of diverse discussion. The domain of blacklisted topics and speech grows with population. I believe this principle applies outside of online communities. I'm wary of large groups who have no tolerance for individuals. I wish the U.S. Government held more power at the state level, but I see no future where federal power diminishes. That's why I have a long term goal to become a citizen of a European country. The U.S. Is irreversibly too big to support individuals in my estimation.