On his site, Matt says:
My interests and activies have moved on, however, and I just have not found the time to update all of my scripts. One of the major reasons for this is that they work for many people. For this reason, I will continue to provide them to the public, but am also pleased to make you aware of well-coded alternatives. (my emphasis)
Also, let's not forget that Matt makes money out of the script archive.
"The first rule of Perl club is you do not talk about
-- Chip Salzenberg