This is hilarious - I have yet to get to the article, because (on a fresh Ubuntu Mate LTS install with the stock Firefox) I am redirected to: -

https://utcc.utoronto.ca/~cks/cspace-generic-ua.html

...which complains about an "HTTP User-Agent header value that is too generic or otherwise excessively suspicious. Unfortunately, as of early 2025 there's a plague of high volume crawlers (apparently in part to gather data for LLM training) that behave like this.", and I'm left thinking that the person behind this site does not care about client-side problems...