> I'd be willing to bet that part of the reason Captcha was implemented in HN proper was to reduce fees associated with the volume of requests, session costs and even network load.
Let me add some info to that.... I'm not sure if anyone noticed, but HN has implemented new session management strategies. You can see this as your login is now maintained across multiple devices, where the arc code (that we have access to) logs you out upon logging in elsewhere. I also believe that when pg handed over the HN code significant changes occurred including how session data is stored and how that data is utilized to integrate with cloudflare. Obviously I'm making big guesses, because I don't have access to the code, but I'm willing to bet the changes HN has put in place would surprise everyone here.
Sadly everyone who sees HN today will come here and look for the source code not realizing what's available here is not modern nor comparable.