The article mentions a recent novel set in his store. It seems well regarded and well-read on Goodreads for such a niche!

https://www.goodreads.com/book/show/56269270-laserwriter-ii

Oh hell, I knew David and even worked with him for a time. It's quite a shock to read of his death on HN.

Tekserve in the 90s was a special place.