The Jargon File (version 4.4.7, 29 Dec 2003):

CrApTeX
 /krap'tekh/, n.

    [University of York, England] Term of abuse used to describe TeX and LaTeX
    when they don't work (when used by TeXhackers), or all the time (by
    everyone else). The non-TeX-enthusiasts generally dislike it because it is
    more verbose than other formatters (e.g. troff) and because (particularly
    if the standard Computer Modern fonts are used) it generates vast output
    files. See religious issues, TeX.


The Free On-line Dictionary of Computing (30 December 2018):

CrApTeX

   /krap'tekh/ (University of York, England) Term of abuse used
   to describe TeX and LaTeX when they don't work (when used
   by TeXhackers), or all the time (by everyone else).  The
   non-TeX enthusiasts generally dislike it because it is more
   verbose than other formatters (e.g. troff) and because
   (particularly if the standard Computer Modern fonts are used)
   it generates vast output files.

   See religious issues.

   [Jargon File]

   (1994-12-01)