I’ve been seeing that also more and more with archive links. Nothing really out of the ordinary on my setup, ublock and Firefox. I’ll get dozens of captchas before i give up.
I get an infinite series of captchas with vanilla Firefox with no extensions or plugins at all. However, the archive site loads instantly on Vivaldi, a Chromium-based browser, on the same system. I wonder if their security setup has a bias against Firefox for some reason.