As an IT guy in the early 2000s, it was really annoying to see all the "Mac vs. PC" arguments. PC stands for Personal Computer - a Mac is literally a PC! When I was a kid in the '80s-'90s, my schools all used Apple IIe computers (and later versions of Apple products as I got older), but they always called them PCs.
But those Apple ads convincing people to ditch the frumpy old guy PC for the young, hot Mac guy did their job, and pop culture decided that a Mac wasn't a PC.