The link to the IBM RISC paper didn't seem to work and I'm not sure if this is the paper that they're linking to since it is from 1990, but I found one of IBM's paper on RISC: https://sci-hub.se/10.1147/rd.341.0004
What I didn't realise is RISC existed and was an initiative by IBM prior to Dave Patterson research and coining of the term.
The joke goes something like: "I people programmed RISC in assembly when you were still in kindergarten" haha
I remember the quote but not the source :(