[Groff] hyphen.de

[Daode]

Hello,

i'm looking at a rather current (Add a shell command to the file
MANIFEST.., 2013-01-24) version of the GNU (t)roff repo and i see
that hyphen.de was imported into groff:

  Author: wl <wl>
  Date:   2006-12-19 08:02:52 +0000

      Add support for German.  For activation, simply use -mde or -mden
      (for traditional and new orthgraphy, respectively) as the last
      macro package.
      
      * tmac/de.tmac, tmac/den.tmac, tmac/hyphen.det, tmac/hyphen.den,
      tmac/hyphenex.det: New files, partly taken from CTAN.
      * LICENSES: Updated list of hyphenation patterns.
      * man/groff_tmac.man: Mention de.tmac and den.tmac.
      * NEWS: Updated.

That is great!  But then i looked into hyphen.de(t) because of
a size mismatch with the version in my ..working.. macro package
and saw that it is not the version that Walter Schmidt updated for
the new German orthography in 2001.
Now i wonder why?  (Well, except that i personally dislike and
disagree with it -- but it is official german in the end?)
Is anything wrong with it?

Thanks and Ciao,

--steffen