Because 1) maintainer can be overloaded, so (s)he will stick to defaults, 2) maintainer needs a logical reason to change default setting to something else, whic

Because 1) maintainer can be overloaded, so (s)he will stick to defaults, 2) maintainer needs a logical reason to change default setting to something else, which is not obvious in most cases. Maintainer is not a QA team.