Here’s the author (fasterthanlime) writing about how they built their website by hand - https://fasterthanli.me/articles/a-new-website-for-2020

Like most things written by fasterthanlime, it will take more than an hour to read.

https://builtwith.com/detailed/fasterthanli.me This suggests hugo is being used

This used to be true — until June 2020, as that website noted.

It's all custom now, and closed source, since I want to focus on writing rather than maintaining an OSS project that fits everyone's needs