I disagree. People who do not want to learn how to use a terminal and yet
want to install and use programs absent from the default install (i.e., more
than 90% of the population, including, for instance, my parents, my brother
or my wife) would never use Trisquel (contrary to, for instance, my parents,
my brother or my wife). They would believe there is no way to install
additional software but following unsafe the Windows way of downloading
applications from their sites... what often means, in the GNU/Linux world,
downloading source codes that they cannot compile. Opening the Synaptic
package manager, searching in the description of the packages and installing
them is a breeze. Learning alone how to use 'apt-cache' and 'apt-get' or
'aptitude' (+ the mere existence of those commands + sudo + the basic use of
a terminal) is not something most people want to do. And I do not see
anything wrong with that.
Notice that most computer users spend far more time writing in a word
processor than administrating their system. By your logic Trisquel should not
include LibreOffice but rather only ship Emacs (or should it be 'vim'?) and
LaTeX. It is indeed a far better and faster way to produce perfectly
formatted texts. But you first need to learn the use of that powerful text
editor, the LaTeX language, how to go from the .tex files to the PDF, etc.