They also block Brave browsers entirely. I tried reading into it, but it appears to be one of those "programmer personality quirks". The fellow that runs the site appears to think Brave is a scam of some sort, and just decided to block the entire browser. Oh well, I'll stick to HN.
Is it me, or is brave more of a cryptocurrency platform that pretends to be a browser? A lot of people don't really like the toxic discussions that crypto usually tends to devolve in. So it makes sense to block the browser if you don't want those people on your server.
As far as I can tell it's just another browser that blocks a lot of internet crap.