Isn't POSIX userspace mostly standardized? We should be pretty conservative with what goes into such a standard, but something like age and jq IMO meet that level of utility to justify it.
Yeah POSIX standardizes a bunch of tools, mostly the ones you'd expect (cut, cat, file, etc). I agree with the conservative standardization for the most part, but I selfishly would love these more niche tools to be available on a fresh box. Good point though, I just want to be a little lazier in my script writing I guess :)
I guess distros are the next layer over POSIX standard. Distributions have the ability to, mostly arbitrarily, select the default packages they ship in their releases.