Exactly. As long as the codebase is consistently following some given patterns, LLMs nowadays stick to it.

Understanding that limiting number of “design patterns” in a codebase made it better (easier to code and understand) was a good proxy for seniority before LLMs.

Now it’s even better: if all of a sudden “unusual code” is in a PR, either the person opening the PR or the one reviewing it has lost touch with the codebase. Very important signal, since you don’t want that to happen with code you care about.