The mandatory graphic GUI - and MacPaint - made the point that the Mac was primarily a visual design tool that happened to handle text.

That was absolutely revolutionary.

S-100 systems and the early PCs were primarily text systems that sometimes happened to do crude graphics.

The original Apple II tried to do graphics but the tech to do it properly just didn't exist. And the underlying UI was still text based.

Raskin's Mac vision didn't make that leap. It wasn't just about the mouse, it was about the philosophy of the product. Raskin wanted text-but-cheaper-and-better, Jobs wanted pictures and art.