@multisn8 @mhoye I saw the story retold in a talk from @TheRealNooshu at PerfNow a couple years back (also excellent, on this subject, and from Gov.UK details) - https://youtu.be/VdBxrZB9V_c?t=1259

Looks like Terence Eden is who he cites it from, which I think makes this the corresponding post: https://shkspr.mobi/blog/2021/01/the-unreasonable-effectiveness-of-simple-html/