Nope, I've worked with and on design systems since 2010.
And Brad Frost's Atomic Design [0], a formal system for developing a design system, was first written in 2013.
And Brad Frost's Atomic Design [0], a formal system for developing a design system, was first written in 2013.
I you used that term in 2010, you are a real pioneer.
[1] https://twitter.com/search?q=(%23designsystem)%20until%3A201...