Here is a recent use of Illustration in a derogative context.
What is perhaps more worrying is that it came from within the design community:
'But when I showed this cover to my friend Henrik Kubel, he was, to my dismay, not overwhelmed. He thought the spine was a joke, or an obvious stroke of supreme laziness (which it was). He finally said the design looked "Illustrator-y". Whether true or not, there's not a worse adjective he could have used - it went straight to the heart of my insecurity and I instantly knew I had to start again.'
Marian Bantjes & Jessica Helfand
'The Bantjes Covers'