I'm a very high level programmer, turned Data Scientist, turned founder (I successfully exited my prev startup). I still read this paper (a few years ago). I guess if you're "born" a programmer, all these nerdy/curious things are entertaining. One of my "developer" passions is multithreading and concurrency. Even now running my second startup, I, from time to time, sit to write some concurrent puzzle programs.

I also like to follow Tobi Lütke. The guy is the founder/CEO of Shopify (with all which that might entail), and he still tweets amazingly interesting low level coder stuff.