The way I read it, he moved on from ikiwiki to his "newest approach", which looks to me like regular hand-written html+css. And why not, it's just a bunch of words, no frameworks necessary. This guy has software running on Mars so making a good old '90s style website by hand seems appropriate.
That's what I interpreted at least one of the times, but if you follow the "new approach" (it's a link) it takes you to a blog that is old (according to dates) and does not match the current styling
I could definitely be wrong, as it's still a bit ambiguous to me