Well the interview clip was from 95 so you're right...but I'm saying the phrase wasn't popularized like that amongst the general public, that's all.
An excerpt that was posted in this thread from an article Eddie wrote last month concerning inaccuracies
"Three weeks later, the EPA had announced it was no longer consulting scientists, Ferguson had announced there would be no indictments, and I sat in my massage chair numb to America, getting the gluten kneaded out of my back fat. Everything I saw, from Republicans suing Obama over immigration reform to the script for our second episode, where ODB is appropriated to teach Young Eddie how to make it rain, made absolutely no sense." In the footnote he tells them that ODB song came out before 'making it rain' but the producers didn't care
http://www.vulture.com/2015/01/eddie-huang-fresh-off-the-boat-abc.html
And I agree with the ODB thing..it clearly made no sense. Especially given the time period and the rapper