Comment by zahlman

> A sane "cooldown" is just for automated version updates relying on semantic versioning rules, which is a pretty questionable practice in the first place, but is indeed made a lot more safe this way.

I'm reminded of how new Setuptools versions are able to cause problems for so many people, basically because install tools default to setting up isolated build environments using the latest version of whatever compatible build backend is specified (which in turn defaults to "any version of Setuptools"). qv. my LWN article https://lwn.net/Articles/1020576/ .