I found someone requesting that it be added to Debian:

https://bugs.debian.org/cgi-bin/%3Ca%20href=%22bugreport.cgi...

So far no one has mentioned licensing being an issue.

that's great! possibly the link you meant was https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1078132

that seems to be from only a few weeks ago though

it doesn't seem to have come up on debian-legal in the last year or so https://lists.debian.org/debian-legal/ but debian-legal is also kind of a shadow of its former self

Notably in that bug report the reporter says they cannot maintain it (not that I blame them, not a small work)

I doubt it is due to legal concerns if Ubuntu, Fedora, and FreeBSD are all distributing their own builds.

you could easily imagine fedora distributing their own build of software whose licensing fails to comply with the debian free software guidelines; bundling proprietary software used to be common in linux distributions in fact

"legal concerns" is not the same as philosophy differences.