What do you mean didactic 2. you never posted didactic 1.... well uhh fuck whatever. anyways more on my attempt to understand the term. I have been informed the term can used as an insult, by implying that an art work is preachy. Or not an insult by describing an art work as instructive.
also i believe it can be used as a way to fill in the gaps in between other words used by art students
(ps.thanks man. you are the man, man. if anyone where the man. yeah)