This is a huge red flag for systems design to me. Whenever and whereever I've seen this abundance of assumed implicit knowledge instead of documented or introspectable configuration, the systems have invariably been excessively difficult and/or time-consuming to troubleshoot once in operations. This is overlooked and hand-waved away when the system is the new shiny, but once it becomes productionalized "legacy", it becomes a huge headache to leadership that appears to them as constant instability sucking up everyone's time on fire fighting instead of innovating more new shiny.

Here's to hoping better dependency management like from the Nix folks makes it into the mainstream platforms.