I don't mind it for footnote/reference-book type material, where you want to have some information available for the curious but 99% of your readers won't care.

I don't mind it for footnote/reference-book type material, where you want to have some information available for the curious but 99% of your readers won't care. A few dense paragraphs about a database implementation that's ancillary to a story about the content of the database, for example; a small percentage of readers might want to reimplement or host A Thing locally and it could be helpful to know that it's this type of database with that number of tables and takes up x gigbytes on disk etc.