Origin of artsy
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Word Origin and History for artsiness
"pretentiously artistic," 1902, from arts (see art (n.)); originally especially artsy-craftsy, with reference to the arts and crafts movement; always more or less dismissive or pejorative; artsy-fartsy was in use by 1971.
Online Etymology Dictionary, © 2010 Douglas Harper