There are already mostly compatible utils in FreeBSD*, as part of their own attempt to pivot from GPL to BSD following GPLv3 (I think it's understandable that an explicitly BSD-aligned project would seek to avoid GPL). So anyone who wants to avoid coreutils could already do it.
I don't expect a BSD to host GPLd software, but these projects are built with the spirit of open source, so they don't pull shenanigans.
The problem with permissive licenses started in my eyes with companies abusing the freedom they provide by creating *ium projects and started to push closed source applications with pseudo-open-source *ium projects. Also the same companies get these software fork it, add a small thanks with a 3pt font, printed to the space between the last page and back cover, and be done with it.
This is not illegal, but against the spirit of open source in general, and harmful on the long run.
As someone said: Open Source is about developer freedom, Open Source is about user freedom.
And developers are users of the software they don't develop, and they're cutting the branches they're sitting on.
* With the exception of diff3.
https://wiki.freebsd.org/GPLinBase