I can definitely say that he changed mine. My first WYSIWYG word processing experience was on an Apple //c (they loved those slashes instead of the Is for some reason), and I ended up in marketing and communications partly because Steve Jobs took that calligraphy class in college, and I loved the fonts I could play with...
You realize Jobs had almost nothing to do with the software running on the IIc, right? He'd been booted (driven out, quit in anger, however you want to interpret it) from the company already, and was very much focused on the Mac from 1983 onward.
One of the most frustrating things about his eulogizing (and yes, I'm no great Jobs fan) is the number of things attributed to him that simply aren't true. I saw a breathy news cast last night broadcasting from "outside the garage where Jobs invented and assembled the first Apple II", which really drove me nuts.
