EMacs and Treesitter is much faster way to “find all references to X” in the codebase. Other questions can be answered with the naive grep implementation and marginal brain power.
If all they’re investing in here is to write boilerplate code, well, that takes not much time in the grand scheme of things. Where the value add is actually in the design phase. And, as a result of these tools people are going to just skip those crucial steps.
Am I missing something?