Perplexity is okay with more academic topics at the least, albeit pretty shallow (usually isn’t that different to google). There might be a policy not to include encyclopedias, but it would be an improvement over SEO garbage for sure.

Another older example of this idea: https://solar.lowtechmagazine.com/about/the-solar-website/

Linux support has made some decent strides, particularly with the open source monado / wivrn + xrizer stack (steamvr / alvr still have their issues but are getting better).