It is still used in many areas, but not nearly as popular as it was.
When Delphi 1.0 came out, it was state of the art for Windows software
development, Pascal (especially from Borland) was very common, and it's
only competitor for RAD on Windows was Visual Basic 3. These days,
Pascal has waned as a choice of development language, and there are
plenty of other RAD tools and choices for gui programming.
This particular poster, Amine, is obsessed with Delphi and his various
"scalable algorithms" implemented with it. He keeps posting to all
sorts of Usenet groups about them, with a total disregard for the
relevance. For all I know, he might actually be good at scalable
algorithms or have come up with bright new ideas, but he is such a weird
and an anti-social poster that no one takes him seriously enough to
bother to look at his stuff.