Obviously these tricks do not actually magically give you complete understanding of all the code on their own. They are inroads, they are gaps in the armor that you can wedge the tip of a crowbar into.

You need to think of source-available reverse-engineering as a process like a Metroidvania. You start out with very few abilities, and large map full of unknowns and hazards. But progress is always about finding the next ability to unlock more parts of the map. You find an ability, that lets you find an ability, that lets you find an ability, maybe some boss fights sprinkled through, but that's the process. It's breadth-first search where there is no actual wrong answer for what your next discovery should be. ANY knowledge becomes a tool to get the next available piece of knowledge.