Not true. I was there in the late 1980s with CompuShow. The controversy was THERE in the late 80s. He said “JIF”. The author of CompuShow (the main GIF viewer people used) agreed it was JIF back in 1989 _because_ of the ongoing controversy *at the time* where people complained that “no, it should be GIF because “GRaphics…”
It’s a debate that’s been going on for 30 years.