An objective criteria for deprecating community platforms
Perl has been around for a couple of years longer than Python and Linux. Perl 5 was released in 1993, the same year as FreeBSD and NetBSD.
In the 90's for Open Source projects the "community platforms" where Usenet newsgroups and mailing lists run on Listserv or Majordomo (Mailman didn't show up until 1999). IRC was used for text based chat but without SSL!. CVS was the open source version control system of choice or you might have been unlucky enough to use Visual Source Safe at work, whilst Subversion wouldn't show up until 2000.
But the 90's are more than 20 years in the p…