I think the first sentence of the author counters your comment. What you described works best in a familiar codebase where the organizing principles have been m

I think the first sentence of the author counters your comment. What you described works best in a familiar codebase where the organizing principles have been maintained well and are familiar to the reader and the tools are just the extension of those organizing principles. Even then a deviation from those rules might produce gaps in understanding of what the codebase does. And grep cuts right through that in a pretty universal way. What the post describes are just ways to not work against grep to optimize for something ephemeral.