That page[0] should explain the reasoning behind the redirect. There's a separate redirect[1] if you have a never version reported but are missing headers.

Seems to be a fairly custom attempt at keeping poorly written scrapers off the site. curl works just fine for me. (I found these redirect URLs by manually setting the user agent header in curl) Fun idea.

What's your browser's user agent? You might have an extension that alters yours to not report your browser's actual version number.

0: https://utcc.utoronto.ca/~cks/cspace-old-browser.html

1: https://utcc.utoronto.ca/~cks/cspace-no-sec-fetch.html

Yeah, I kind of understand the author, it just sucks to be on the receiving end. I use Firefox ESR 115, with this UA header: "Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/115.0"

I'm on FF 145 and don't see this message.