Is there no place with a large active userbase that strikes a balance between keeping out Trump Trolls and not being professional victims/hypersensitive?
Twitter, you can just collect your own 'userbase'

I'd recommend ComfortablySmug and Dril and go from there. You can also ignore the imposter Trump trolls and just go with the original @realDonaldTrump instead.
With that said, I don't find the Bore to be small at all. In fact when I got banned from NeoGAF around 2010/2012 or so it was still fairly small compared to before the shower elf implosion.
Not many of the posters who registered after 2010 or so were able to establish themselves in the community.
It was mostly dudes like Pachter and press sneak fuck banking in on their vidya game fame but not really signing up to add any value to the community.
The times without screaming YouTuber's (apart from the AVGN who was original and funny), caturday's and 'meh' truely was the golden age of the internet.