A programmer who by default adds a good concise readme to his projects is an
indicator that the same will apply to the codebase, in that he will plan for the future.
I've seen it too many times, exceptions are rare.
A good readme is concise, it offers key 'bring me up to speed as fast as possible' information, nothing more. It's not documentation.
A good readme should include a quick bootstrapping info, but it's not enough, it should have a concise summary overview and list any important gotchas. As well as provide the procedures for builds/releases if apply. Links to relevant docs if exist are fine if the information becomes too large for the readme.
> Having a README wouldn't have saved this code from needing to be refactored. Nor would it have really changed my opinion of the code. It hasn't been a reliable signal.
See I read that and figure that it was actually a perfect signal - since that "bad unmaintainable code" lacked a good readme.
It's like the Van Halen requiring Brown M&Ms at their concerts https://www.snopes.com/fact-check/brown-out/ - I've found the README is one of the best indicators of the level of detail a person applies to their work.
> it makes no sense to give that much credit for something that really isn't impactful beyond the first few days of using something.
This is the attitude that I wouldn't be looking for when recruiting - a README has a ton of use, for helping bootstrapping new people to the code base - to even helping yourself if you do some maintenance on an old project and don't want to spend more than the minimum time necessary.
It's this forethought I'd like to see in a candidate, and that 99.9% of the time shows in the quality of the readme.